Poor service and no feedback from their agents

On 17 Nov 2019 I was at Vodacom Kolonnade to do a transfer of ownership and to upgrade, the guy that helped me never informed me that I must first upgrade before they do the transfer, so the transfer of ownership happened, which changed the upgrade date to 2021. They had to log a call to reverse the date, which should've taken 48 hrs. The guy never phoned me back, on Thursday 21 Nov 2019 I phoned him to follow up and he said they are still busy with the process he will inform me when it's done, he never informed me.. On Sunday 24 Nov 2019 I went back to Kolonnade, this time at Vodacom 4u where Dwayne told me that I was supposed to upgrade before the change of ownership, and he also followed up on the reversal and said he would phone me on Monday to let me know how far the process is... It cost me yesterday to phone him and follow up, which he told me they have a back log but he will follow up Tuesday morning (today) but still no feedback... I'm fed up phoning them for feedback and all their excuses. This is the last time I'm doing business with Vodacom.