Vodacom Billing

I called Vodacom customer care querying about the debit order on my account of R 537.50 taken from my account by Vodacom. I was then told that I’m billed for two handsets. And I had done upgrade for one handset for R299 on uchoose 150. Then I was transferred to online upgrades then I was talking to consultant who said he found it strange why I am billed so much when my invoice on his system showed R28.50. Then he logged a call with billing department and gave me a reference of 1- ********** ********** said they will get back to in 5 working days. Now the agreed amount during my upgrade was R299 nothing more or less. I am so disgusted with Vodacom now more than ever that I want to cancel my upgrade and contract and get your handset from me. I do not wish to continue with this contract. So please return my R 237.50 back to my account and we go our separate ways. If not I will be forced to reverse the said debit order from my account. It’s not a threat but a promise and I will take my chances of this destroys my ITC record.