Incorrect billing on contract upgrade

I did an upgrade on the 24th April to a new package. I was billed incorrectly for the sum of R 1 947.35 when the package I upgraded to is R 889. Invoice number K ********** . Despite numerous phone calls to have this rectified I am still waiting.

I find this utterly despicable that long time clients get ********** in this manner and then no effort gets made to resolve the issue speedily. While the call center agents try their best they are in no position to advise how or why this was billed incorrectly or to rectify the matter. I am very dissapointed in this level of service and now regret having done the upgrade and keeping my number with Vodacom.

I would appreciate that this gets resolved as a matter of urgency, as the end of the month is fast approaching and I am not going to allow Vodacom to deduct the incorrect amount from my bank account.