Bad customer service

I am very dissapointed in the tenacity group. I have been trying to reverse a charge on my account since the 6/11/203. Everytime the Pep staff call the customer centre we are sent from pillar to post. I have wasted petrol and my time going to the store with no luck. When we call the customer centre it is always a different agent who requires the same information that has been provided. I am very annoyed and frustrated as the issue has not been resolved to date