Declined preachers

My account has been debited an amount of R8.50x4 daily from the 2nd of Jan 2018 to date, with the reason being declined purchase, I called the bank trying to query these transactions only to be told need my card with me to be assisted, I lost my card last year October, and I was using ewallet to access funds and doing perfectly with it, I'm now owing R893 in charges, the agent I called at FNB Constantia was just not interested in helping me until I get a card number, even after giving her all the correct information about me. I'm just thinking of closing my cheque account and moving to another bank that won't charge me this much.