vodacom

I recived a sms from vodacom saying there is going to be a sim swap on my number so I tried to call the call centre to say it not me doing a sim swap so it must be *****.So then I recieved another sms saying the sim swap will be done in 3hours so then I tried to phone agian and still cant come through to vodacom call centre . Then the sim swap was done and I lost my number . Then I asked vodacom to tell me how it happend . How did they get it right without my permission and then they told me people do that so they can get hold of your bank details and so on . So I had to cancel all my bank cards and change my details so that no one can get hold of my personal information . Vodacom Call Center is non responsive and not customer friendly and poor client service .