Discovery Card - Refusal to close account

I have being trying to close my account for months now. I requested for my account to be closed due to the ridiculous fees charged to the account, without me even using the account and or having cards to use the account. When I asked for proof that I received to cards (to explain the card charges) none could be provided to me. After several attempts asking Discovery to show me evidence that I did receive the cards, and them not been able to do so, I decided to pay the account in any case, to close it, and get it out of life. I submitted all the forms, but to this day my account is still not closed and incurring fees. There explanation is that they need my banking details.... and unless they have my banking details the account will continue to incur fees and be open.... and in the meanwhile the costs keep on escalating I am completely disgusted and sick and tired of this and Discovery - please can it stop charging fees for services not used (and reverse) and close my account