Terrible service and general incompetence

We have been vodacom customers for more than 10 years, we have 6 contracts with them. Every time an upgrade is to be done they mess it up. Either they upgrade the wrong number, assign the upgrade to the wrong number or fail to cancel the right contract. This year we opted to do it online on the 24th of November as to make sure the right deal is assigned to the right number. Go through the entire process, select everything, take screenshots of EVERY step of the process, recieve a notification the order has been processed, recieve an order number, receive a waybill number and courier name. Everything is still active on my online profile... what did they do? They upgraded 2 numbers to sim only data deals. Have been struggling to sort this out ever since. It is the 12th of December. Spoken to countless agents, online and by telephone. 5 minutes ago to another promising to help but ending up doing nothing. Requested to speak to a manager and told he/she will phone me back, in the last 2 weeks none have phoned back. I have had enough. If you are considering moving to vodacom, refrain. As with everything else in our country there is no customer service from this service provider.