"**** !!!"service MTN Northgate!!!

MY name is Mr Marvin Musiiwa currently using my brother's Hellopeter's account. I have an account with MTN Northgate,my account no A ********** .The number in query is ********** 597(sim lost) my alternate contact numbers are the following, ********** 592 / ********** 735. My problem is as follows.I requested a SIM swap on the 04/11/18 at Northgate MTN shop .72hrs latter my sim is not yet active.On the 05/11/2018 my wife went back to the store to follow up on the developments regarding the above mentioned issue.The sales person Monica Petje told her that it's only a network problem,I should switch off my phone for 2-24hrs my sim will be active.I did as she had advised my wife but up to now nothing has happened.I am still disconnected.Its not the first time receiving bad service for the same reasons at the same store.Its frustrating because that is my principal number it is linked to banking etcetera.Angry and agitated customer contemplating to switch to another network.I need an urgent response from any other MTN official of a higher rank.I have called the customer service centre twice and I have been advised to go back to the store to rectify the problem but as a loyal MTN paying client with multiple contracts with MTN for the past 8years I believe I deserve better and I am refusing to go back to that Northgate branch.