Poor service MTN Melrose Arch

The staff at MTN Melrose Arch are rude and highly inefficient. I was advised to do a sim swop on my phone by MTN as my SIM card was supposedly old and unable to handle software updates. I purchased a new SIM card, paid cash (R150) and signed the necessary documents. I was not given a copy thereof. Lerato promised that my old SIM card would be deactivated by the late afternoon of 26/10/2021 and the new SIM card activated and functional within 24 hours. The process has not even been done to date! When contacting the store I am told they cannot assist me and that Lerato is 'out' and that they cannot get into her 'system'. The male assistant (name unknown) is extremely rude and unhelpful. An absolute disgrace!!