No assistance with account

I need urgent assistance from Vodacom with regards to my account. I have spoken to every department possible and sent emails to numerous people and absolutely no one comes back to my.

I did an online upgrade 2 weeks ago and received the phone last week. Now I am being billed for something, over a R1000, that no one can explain what it is for and I know for a fact it's in error because extra charges was definitely not included with the upgrade. I'm also charged the admin fee even though I upgraded online and it states that there is no admin fee payable when upgrading online. Also a connection fee that was also not supposed to be charged. I am now sitting with an overdue account of R1400 + which I have to pay or my line will get suspended. I have already received the calls threatening suspension - I will NOT pay an account that is not mine to pay.

I am hoping that someone from Vodacom will actually read this, seeing that no one can read an email, and come back to me with some assistance.