TELKOM MISLEADING!

I have once again taken out a contract with Telkom on my name for my wife and myself in January.The contract was as follows, it was the free me 1 GB contract that comes with 1 GB of Data and 100 free minutes to other networks and unlimited Telkom to Telkom calls for the 2 year contract which is R 249 p/m and I topped up a extra 2 GB which would cost a extra R 139 p/m which is R 388 in total per phone and I chose the Huawei p10 lite for both of us so the contract should cost for both phones R 776 . However once again as before Telkom will over debit me by atleast R 600 and the invoice they send per phone has different figures on it .The worst part is that I can also never get through to them and I wait about 15 minutes on the line and I really don't have 15 minutes to waste waiting on the phone and nobody awnsering! Telkom needs to refund me the difference and I want to rather go back to Vodacom and spend more and have a better network as I also never have signal on Telkom mobile !!!!!