<prompt> Human: My grandmother passed away last spring, and I found out later that I was entitled to some funds as per her will. The credit union that manages her funds sent me an agreement to sign. It stated that there were two other beneficiaries, and that the funds left after squaring up costs and debts would be ditributed between us. I singed this and sent it back to them as instructed. Not long after, I recieved the bankers drafts and deposited them to my account. This was about 3 or 4 months ago.Yesterday I got a letter in the mail. It was addressed to the correct first name-incorrect last name actually my grandmothers last name with the correct address. This letter told me that verbatim-names redacted Please be advised that the cheque issued to you in respect to the settlement of the estate of XXX XXX was prepared incorrectly and does not reflect the correct balance as per instructions in the Will. The correct value should have been 239.59, therefore making a difference of 1749.63. It is required that this difference be returned to Affinity Credit Union XXX Branch as soon as possible. Weve made numerous attempts to contact you prior to you negotiating the cheque, as well as after the fact, with no response. This matter requires your immediate attention, please contact so so etc.Today I called the CU. Spoke to the lady I was directed to. She was very understanding and apologetic, but unyielding in that I now owed them 1749. She explained that the person in charge of making up the three estate cheques did not look at the specifics of the will before they issued the cheques, and that the error was not caught by anyone until my uncle recieved his bank draft and immediately brought the issue to the banks attention. He was the executor of the will, and so knew the specifics. This was at least 3 months ago. They have since rectified the amount of money my uncle and great-aunt recieved. From the banks side of the story they have spent the difference of that time trying to contact me by phone. The person I spoke to knew that this was unusual becasue the first time she had called me regarding the original estate dispersal agreement papers, I had called her back very quickly, after simply seeing the missed call on my phone. The reason I didnt call back this time is because they were calling the wrong phone. Instead of calling the home number that I had on file, they tried sending a fax to it. ??? Also, somehow they lost my cell number, and were calling up one they had found online instead. Yesterday I got the letter, and the rest, as they say, is history.Obviously many incorrect assumptions were made on thier part, and they fully admit this, even going as far as to say that they have learned many valuable lessons from this situation and will be changing some of the paperwork they use particularly the document that I signed!; becuase it is not stated on the document what percentage of the estate anyone is to recieve. Therefore, in my opinon, this should mean that I did not negotiate the cheque in bad faith in any way, and the mistake is theirs to accept and pay for.Am I totally out to lunch here? Am I actually obigated to now pay them 1749? Or is this just them trying to quietly retrieve their losses on this transaction. The lady I spoke to was nice enough, she offered to basically give me a no-interest loan that I could repay at whatever rate I could afford...but to me the principle of it stinks! There were MANY checks and balances that this transaction had to go through in order to be completed. The bank did not catch their error in any of them. I recieved the bankers draft, and deposited it with no problem. Now 3 or 4 months later I am being billed for 1700 dollars!!! What the hell? If this was an auto dealership, and I ordered a car from the factory, went through all the paperwork that entails, and then when the car got to me, it had a couple of options on it that I did not sign for...would the auto dealership take them back, or make me pay the difference even though I did not originally agree to it? Any dealer Ive been to would look you in the eye and say well sir, looks like you got yourself a freebie today. Then they would eat the cost...or make the employee who screwed up so horrendously pay for it. Am I totally incorrect in thinking this? Help me Reddit!P.S.: I live in Canada... Saskatchewan specifically.edit:speeling  <response>: How would you feel if you found out the bank had accidentally shorted you 1700 and they declined to make it right for whatever reason?Verify its a legit error and return it. It sucks it took so long to discover the error, but such is life. Three months isnt actually all that long... 