Online transactions and agent doing the wrong thing

I saw in my statement that there are deductions with regards to online transactions of which I don't know. Google Pay. I then decided to call the call center told me that I bought something on play store of which I don't even have. Later on I went to the bank they told me that my card was stopped, surprisingly it was that agent. I had to pay and do another card before assistance. After checking they said in order to dispute this I have to pay 150 for each and every transaction, that's almost like paying for 150 ×22 transactions, and it was not guaranteed that my money would be paid. I am a student and need the money that online shop took, I asked them to reverse they said it impossible. I'm so disappointed with Capitec.