Unauthorized transactions from my account, f r a u d whatsap chat is useless

Webafrica have been making unauthorized debits from my acount; they double billed me in January (4 January) and then tripple billed me in February (8th, 16th). I disputed each transaction in the app, and nothing has been done. One case was even closed as "unresolved". Webafrica say the fault is on Capitec's side, Capitec say it's not. What is disturbing is that I removed my Capitec card from Webafrica's payment page, after the second double charge on 8 February, yet they still managed to deduct funds through "card payment" Trying to report it to the ***** whatsapp number is useless. In the hour I've been on this chat, I've had three people being assigned to me. All of them take ages to reply, and then I get passed to a new person who I have to explain everything to again. Nothing is resolved. This is disgusting service.