False Contract - Overbilling Account

I signed up for an upgrade on the 29/07/2015, as I was told that I would only pay R199.00 per month for the Internet 5 Promo - which I had already been on - 10 GB night time data and 10 GB day time data.<br> <br> I was initially paying R299 per month and the contract had come to an end. I was then contacted by a call centre saying I could continue at R199 a month - I was offered the R199 upgrade to continue with Telkom, else I could stay on the R299 pm package on a month to month basis. <br> <br> I went to the Telkom Mobile branch at Canal Walk and signed up for the R199 pm package with someone named Elvis - I still have the contract as proof and the contract states R199 pm with a R100 activation fee. <br> <br> I am now being charged R399 pm which is out of my budget and cannot continue with this fee. I was also debited R492.55 in August and when I queried this fee I was told it was a double debit to cover my first and second month. I would like this matter sorted urgently because I have been debited R399 last month and again this month. I believe I am now owed money by Telkom. I have contacted the help center and have had no feedback on the matter. I am now furious and want this sorted out immediately.