***** on my ackermans account

My card has been *****ulently used. I just noticed purchases in Boksburg and Sebokeng respectively. I no longer receive statements on my email and I don't receive statements on my phone either. My last purchase with the card was 22 March in Bougainville. I suspect someone might have changed my contacts without my permission. I request a thorough investigation to be done. I am not going to pay for any purchases I didn't make. I stay in Pretoria and have never been in Boksburg or Sebokeng.