Pathetic Vodacom service - what’s new?!

I am so extremely disappointed and frustrated with the service I have received from Vodacom with regard to my upgrade. On the 10th Jan I received a call from Vodacom to upgrade my contract. The *********** staff at Vodacom upgraded the incorrect number. After numerous calls to Vodacom to correct their mistake they have still not resolved this. I then received an invoice that I was being charged for the upgrade to the incorrect number, which is actually a number used for a WiFi device and it was upgraded with minutes! I cannot handle talking to anyone from the call centers at Vodacom because they are all so ***********. Really pathetic service from a company that I have been a customer for over 10 years. I am considering cancelling all contracts with them and will never recommend Vodacom to anyone. They are the most expensive service provider and have the worst customer experience and call centers.