JPMorgan Chase Credit Card Complaint

JPMorgan Chase Credit card department,

Billing disputes Connecticut

I have had this credit card since -/-/-. I never had a dispute until recently so I never knew the credit card practices. -/-/- I rented a car -. The quote I received was for $710.00 ( attached ). I expected to pay that amount when we turned in the car in -. However, the car rental company started to charge my credit card at odd intervals, so it was difficult to determine what was happening. Here are the charges - $ - $ - $ - $ - $ - $ - disputed these charges but Chase Bank did not advocate for me. I am the customer and Chase Bank should require their merchants to honor their quotes. Is n't that what credit card companies are supposed to do? I do not know what to do next. Please advise me. Thank you.