Disgusting services

Absolutely shocked at the services recieved as a discovery client, i have been charged on a canceled card for a transaction, i have been trying to contact discovery i have spoken to agents who were very unhelpful and didnt even know how to go abojt handling the situation. I spoke to a manager named Marushka who was the most unprofessional person i have ever spoken to, she informed that she doesnt know whats going on and that the case is with the disputes team, which i have emailed myself and havent recieved any response from. The card was cancelled but payments are still going of the account, i will definitely be contacting the obssa with my complaint as even the staff at discovery bank is ***********