<prompt> Human: As the title states, I paid a flooring contractor 3,800 to refinish my floors. The work itself was great, however, when i checked the credit card account I had used to pay for the work, I noticed that he had overcharged me by 2,000. I was pretty freaked out so I called right away, and the owner realized that I had been charged for the wrong invoice. This was on 420. He promised to drop a check off at my house that weekend, but never showed up. Then he said he would mail the check by 424. It has been over a week since he was supposed to mail the refund check, but I have still not received anything. My mailbox also has a lock, so it would have been impossible for someone to steal it.At this point it has been over a week since he said he mailed it, so I am going to call and ask what is going on. Im just not sure how I should approach this. Perhaps it is still in the mail, but I am starting to become doubtful. It is on a credit card no interest, so is a charge back an option is the contractor is not being cooperative? I also have all of the paperwork, emails, etc. in case this were to ever go to court.  <response>: Do the chargeback.IME, despite asking for a partial chargeback, I find that credit card companies do a chargeback on the entire amount. That tends to get the attention of the merchant. The merchant then issues a partial refund to the card, and then the credit card company reverses the charge back.Create scans of all documentation proving that you were over charged and any emails or texts showing the contractor promised to refund. Upload these when you do the chargeback on the credit card companys website. He promised to drop a check off at my house that weekend, but never showed up. Then he said he would mail the check by 424.This is nonsense. He should have just refunded to the credit card. Him giving you a free cash advance would be stupid on his part. He isnt stupid, he is just trying to run the clock out.Time is a wasting. Get this done now before it is too late. 