JPMorgan Chase Credit Card Complaint

JPMorgan Chase Credit card department,

Billing disputes New York

There was a charge on the credit card from our wedding. The company messed up on multiple issues and double charged for rooms and billed for services that were not delivered. We initiated a dispute and there was a credit and then chase asked us for supporting documentation which was presented. We did not hear from the rep and we do not know what specific information is needed to confirm a dispute. But after 3 months of waiting I was advised they are not ruling in favor because the company stands by their charges. I do not understand how there is not any transparency on what is required by the consumer to prove that a company lied and billed for services that were not provided.