Tickets-Center.com Refused to refund money Internet

I purchased 4 Houston rodeo tickets thru the Tickets-Center.com website on February 27.  I paid $455.50 for the tix plus an additional $105 for the parking pass.  Due to Covid, the rodeo was cancelled on March 11.  I received an e-mail from Tickets-Center.com on the same day, stating a request for a refund had been submitted in my name.  (We hold season tickets at work, so I know for a fact the rodeo association is offering/did offer refunds for unused tickets.)

I received an e-mail from Tickets-center.com on May 19 stating that due to Covid they had changed their refund policy.  I was not receiving a refund, but a credit for 125% of my purchase price. 

I disputed the charge and lack of refund with my credit card company.  Tickets-center.com supplied proof that I purchased the tickets so that avenue has been exhaused.  I'm not arguing that I purchased the tickets, I would like a refund instead of a credit.