Complaint sub-issue: Credit card company isn't resolving a dispute about a purchase on your statement

I am pre-emptively submitting this because I have serious doubts about US Bank 's sincerity about and interest in enforcing and honoring my rights as a cardholder under the Fair Credit Billing Act against this admitted fraudulent merchant XXXX XXXX  onXX/XX/XXXX ( see below ) : This is regarding a rental that was originally booked for XX/XX/XXXXtoXX/XX/XXXX for {$280.00} but due to it being towed for being " stolen '', I lost access to the vehicle on XX/XX/XXXX. I immediately called XXXX XXXX XXXX  to rectify the situation and the customer service agent told me someone would be dispatched to pick up the car but said I could pick it up by presenting my rental agreement to the towing lot. Regardless she said I wouldn't be charged anything extra from XXXX  ( I asked her to record all this in the notes of the account ). I immediately went to the tow lot where they refused to let me access the vehicle nor even access my belongs despite having the rental agreement and a valid license. I called XXXX  the following day ( XX/XX/XXXX ) and asked for power of attorney because the vehicle still hadn't been picked up but they refused. They also refused to call the towing location to resolve this. At that point I feared I was being charged a daily storage rate and probably XXXX 's rate ( even though I was told otherwise ) because XXXX  had a perverse incentive to not pickup in a reasonable timeframe like their 24 hour pickup service or normal roadside service so they could charge me more. I was told to call the return location ( XXXX XXXX Airport ) which I did but all those numbers return to the national number so I called again and was told I would have to wait until Monday XX/XX/XXXX to talk to someone there in person so I deliberately extended my trip until Monday to do this. I arrived there on XX/XX/XXXX around XXXX XXXX to speak with the manager on duty. She told me the pickup was scheduled on Thursday but would call to try to have it expedited and also that due to the situation, all the extra days would be " rolled back '' on my invoice and thus I wouldn't be charged. During all of this, I was having discussions with XXXX XXXX team where they assured that they would investigate and get back to me and that its been escalated to both managers at the location I picked the car up at ( XXXX Airport ) and XXXX XXXX   Airport. On XX/XX/XXXX, I finally got an invoice and it was for this ridiculous amount including the full 9 days not " rolled back '' as I was told and for a {$1200.00} towing charge not explained at all. Upon immediately calling XXXX, I found out that there was a clear overcharge of at least {$210.00} because the car had been returned actually 3 days earlier. The customer service agent also opened a case to investigate and that a local manager could write an e-form to have the other days refunded. When I asked for an itemized towing bill so I could validate the charges and for insurance purposes ( towing companies often add illegal charges and XXXX has no incentive to have them corrected ), I was refused ( I also asked this on XXXX with no response ). Not only has the {$210.00} ripoff and overcharge they confirmed and the other days I was promised not been refunded along with the towing charges explained, I have gotten no contact from XXXX despite all the promises on XXXX and " cases '' opened. I will fight this dispute and sue XXXX  in small claims court unless these rental charges are rolled back to 6 days ( when XXXX   removed access to the vehicle - I was promised at least 5 days by 2 agents ), XXXX proves that they couldn't pick up the vehicle in a timely fashion ( 24 hours ) which is routinely done as a complimentary service and for regular roadside assistance or pays for the extra 6 storage days charged by the towing company and XXXX  provides the receipt from the towing company detailing the charges and accepts liability for any illegal or inflated charges they failed to challenge. I have never dealt with a more dishonest travel company where I was lied to and ignored every time, especially as someone with the highest status of President 's Circle.