Capitec Bank

It's been the 4th time in 2 years that money was withdrawn from my bank account of companies I don't even know. Evertime this happens I needed to go into the bank for my card number to be changed. But once again this month an amount of over R500 was deducted again for one or other "baby" thing. I`m 62 years old so obviously I don't have a baby and never do online shopping. Every time this happens I don't get a refund so I've lost overR1000 already and the same happened now at the end of March. As I'm a pensioner I don't want to change my account number, because the I have to go through the whole process to register my bank details with my pension at GEPF, and you could just imagine how long it takes and maybe I would have to wait a month or two before I get my pension!