Capital One Credit Card Complaint

Capital One Credit card department,

Transaction issue Minnesota

I had a credit card on file with -, and was charged in error for a service I did not receive. The hotel was informed and I disputed the charge of $100.00 with Capital One, who confirmed the dispute, removed the charge, and resolved my issue from -/-/2016. I have found that Capital One has recently reinstated the charge, refused to allow me to dispute the charge, and is harming me financially by charging interest on a balance which was disputed/already removed. I have contacted - representatives in order to notify them of their error. They advised they could not assist, could not read the letter they sent, and advised they were able to confirm the financial harm, the additional charge being applied, but did not see a reason to help. They referred me to a letter which is still in transit, advised I have n't responded to it, even though I am literally talking to them during this conversation, and they still would n't tell me what is required to get them to complete the request again ... I do n't understand why this is legal and would like a federal review to ensure the employees involved are investigated and my case resolved to ensure I am credited the $100.00, any interest applicable, and any restitution due under law. I require written confirmation from the CEO of their apology for their errors.