Worst after sale service

I ported to Vodacom as I took a contract on Black Friday (29 November 2019). For some reason the port from MTN to Vodacom resulted in the inability to send or receive sms's, which means I cannot do banking or anything that requires an OTP. I have requested CelluCity to log a call with Vodacom on a few occasions and nothing came of it. I've logged calls directly to Vodacom but each time I've followed up, even with a reference number I was told that it was not logged with the technician. I logged a call on the 24th December 2019 and followed up on 6th January 2020, again I was told that no call was logged with the technician. Moving over to Vodacom was the worst decision. Pathetic customer service. Nearly two months later this has yet to be resolved and is a massive inconvenience in terms of banking.