<prompt> Human: Ive never posted to Reddit before, but this experience has been so frustrating that I dont know where else to go. Reddit, please help! My boyfriend posted this for me here a day ago, but I wanted to flesh out more details and talk directly to you guys.During my monthly review of withdrawals from my online banking account, I saw that on 1015 a check from another woman had been withdrawn from my account. Theres a scanned image of the check with this persons address, so I know that this woman lives in my apartment building. I also now know her account number, routing number, and the cost of her rent, because it was her rent check to our landlord, posted on the same date as my own rent check to the same landlord. We have never met, until this fiasco forced me to knock on her door and show her a copy of her check -- in my account. When I talked to her, she said that our landlord had received the check wo issues, but she noticed that it never showed up in her bank statements, and shed been trying to understand why. Like me, she wants answers as to why her check showed up in some strangers account and now has serious security concerns.Her bank is different than mine, her account number is totally different -- so it cant be a clerical error over the digits or some error on the ATM reader. Plus, the coincidence of her living in the same building as me would make that scenario too unlikely. This reeks of fraud, but if it were my landlords company, that still doesnt explain how it got past PNC. Im going mad trying to figure out who is responsible, whom to hold accountable, and what action I can take. Ive opened an investigation with PNC, my bank, and will obviously never bank with them again. Ive also contacted my landlords company, which Im waiting to hear from. I assume that Ill get my money back, but I want answers for how this happened and I want to make sure it will never happen again. Please share any advicethoughtssuggestions below. Thank you in advance!EDIT: I reported this to PNC on Friday. As of Wednesday, they still havent removed the charge or updated the dispute claim.  <response>: So much drama over a bank encoding error. Just call the bank and theyll investigate and reverse the charge. Do you think it more likely that there is massive fraud at PNC or that your neighbors check accidentally posted to your account when your landlord deposited 200 rent checks at the same time?I dont understand why all this stuff gets posted so often here when the answer is to simply call the bank and behave like a normal adult and not lose your mind looking for heads to roll and people to hold accountable.And start checking your account more than once a month. 