FNB cant protect Custormes from **********, No OTP is sent to me but there are always online purchases on my accounts

It all started in December 2019, after the 20th when I woke up I find out that there were transactions that went through my account which I did not authorised. I called the bank within few days they reverse the transaction and the card was cancelled and a new card was issued. I received my Card few weeks later, before I even transact on my new card three transactions took place again reference PlayStation network. all this transactions happens in the odd hours of the morning and I never receive any OTP to authorise the transactions, I called again , the card was cancelled and I was refunded my money. This time around I decided not to request for a new card so I can see if the transactions will still go thorough from my check card. Nothing went through again on my check card however, the transactions now moved to start happening in my credit Card. I I reported and the money was refunded, I requested the bank to give me a feedback on exactly what is happening in my accounts I requested the outcome of the investigations which I never received. Instead I received a call from a very rude lady from complains . I do not have any Cards to transact with , when I want to transact I either transfer money to Standard Bank or ABSA. The issue now is not about FNB refunding me money , but feed back on what is happening in my accounts, I am so afraid to request a card because it appears as if the moment I receive a Card someone somewhere have it. I did not expect FNB to tell me that there is nothing that they can do for me . I requested then to say at least if you cant prevent anyone to buy on line without my concern at least block all the online purchase , the answer I got was the new cards does not have the option to Block onliline purchase, this I was told by Mukundi. I am very angry that FNB cant protect its customers from ****s, for them is like because they are refunding me I should be Ok with what is happening. Can someone assist me please , I am frustrated here. I have been with the Bank for over 20 years and this is the thanks I get for being a loyal customer. FNB you can do better than telling me that there is nothing you can do.