Disgusting Customer Service - Vodacom

After having been with Vodacom since "forever", I did an upgrade on my phone/package in October 2022. The upgrade went through on the correct package with the correct device, but on the incorrect term and amount. The device was delivered to me before the actual upgrade was activated on Vodacom's system. This issue took weeks to "fix", with Vodacom's "fix" being to collect the delivered device and reverse the upgrade! I was PROMISED that I wouldn't have any further issues with Vodacom, and that I could merely do a new upgrade once the previous one was reversed (which I essentially SHOULDN'T have to do as this was VODACOM'S error and NOT MINE!!! Just try and take some responsibility for your mistakes now, and stop making the customer "pay" for your blunders!!) Anyway, surprise, surprise!! I have now attempted a redo on the upgrade and I get an error message on Vodacom's app advising me that there is a "PROBLEM WITH MY ACCOUNT"!?!?! PLEASE EXPLAIN THIS PATHETIC CUSTOMER SERVICE, VODACOM!!