Standard bank unauthorise online transactions non stop

I purchased something online some months back using my stbnk card. A few days later i got numerous online transactions from my card. i then disabled online transactions and started getting the "we are unable to process your transaction" messages on my phone. little did i know that these were just animation cos money was busy going out of my account. i then went to the bank to log a dispute and change my card. a few days later i got the "we are unable to process your transaction" messages and again money was busy going out. New card with online transactions disabled. called the bank they said those were old transactions that had not processed. few weeks later, same thing is happening. what the hell? i am busy losing money and the only crime i commited is opening an account with standard bank