Accounts issue

This is not my first bad review, because this is not the first bad experience I have had. I have had issues with Vodacom insurance, accounts.... and now accounts again. They STILL have not updated my surname on my invoices. Didn't even receive a December statement. Now, even after I was due for an upgrade in November and I did not upgrade, I am still debited the full amount. I have not upgraded for a new handset?? How am I then still paying the handset installment?? Really time for a new service provider, it appears we are all just a number. Zero customer service!