Unauthorized transactions from my account

I got a call from a person pretending it is Vodacom. She said they received a request for a SIM swap which I denied. Numerous questions that sound irrelevant were asked. I asked the person to phone later I am on the road. This did not happen. I got however a sms from Vodacom that said a SIM card swap was requested. I tried to contact Vodacom with no revile. The next day my phone was of line. I went to Vodacom where it was confirmed that my SIM card was not only swap but ported to Cell C.She said this is a spam and I must see my bank. I went to Capitec and found that R6200 was **********ly with draw and paid in other Capitec accounts. I open a Ref ********** 3. After two weeks the Bank came back to me and said yes I was spamed but they are not going to pay me back. I have to go to the police to summons them. They know who the persons were. They have even finger prints. This will lead me to open a case and follow a ******** case. That while the Bank are insured!