<prompt> Human: Hello, so a weird situation here. As an aside, I am usually good with my finances, 790 credit score etc. However, a weird thing happened to me.I went to a new dermatologist, and when I was signing the paperwork they said they wouldnt see me without a credit card on file, and the form had an area to fill in CC information. I left it blank. It also said if you didnt fill out the CC information, you were to give a card to the receptionist to swipe to Keep on file. I signed the form with no intention of providing any information or providing them a card to keep on file.They never asked me to give them a card. The only thing is I paid my co-pay with my Amex. At no point did they tell me they would retain this for their files, nor did I agree that it would be retained.So, last week they charged nearly a grand to my card citing my insurance deductible. Obviously this took me by surprise, and I called them to let them know of my displeasure. They claim they have initiated the chargeback procedure on their own, but still maintain that giving them my card for the incidental co pay was allowing them to keep that card on file.I disagree, as there is no statement from me designating that card as to be kept on file, just an incidental payment to them which they later improperly charged.Anyone have any insight on this?Assistant: So you signed a form saying they could keep a credit card on file and gave them your credit card.Human: I did not give them my card to keep on file. I gave them my card to make a charge for payment. Those are two separate things.Assistant: You gave them permission to keep a card on file and they did. If you didnt want to give them permission, you shouldnt have signed the form.Human: I did not give them permission to keep the card on file.  <response>: It also said if you didnt fill out the CC information, you were to give a card to the receptionist to swipe to Keep on file. I signed the form 