Credit Card Closure

For more than a week now i have been struggling to get help for a credit card that is full paid to be closed, every time i spoke to a call centre they promise someone will call me as soon as possible but nothing happens after. On Tuesday i sent a email and i got an automated response that someone will call me,i am still waiting. The credit card that i was told by the call centre agent that she has put the request of closure on the system is still accumulating charges for me. I desperately need help.