Bad Service and incorrect billing from Telkom

On 26 July 2018, I made an order for an uncapped ADSL at the Telkom Shop, Pavilon Durban. Order no. ********** 01. After several months of calling and attempting to find out the progress of the order I failed to get assistance and had to start a new order telephonically in Nov 2018. My ADSL account was then activated and I collected my modem in Dec. When I took this product I explained to the consultant that I have an existing service that has uncapped calls for R600 per month. The consultant explained that it will automatically add to this. However, recently I received an invoice for over R1700, when I inquired the consultant explained that it is for calls made. I explained but I have an uncapped call account, The consultant said that has been cancelled, I asked who requested this to be cancelled. I was told that both the uncapped ADSL which is R605pm and my current service should be around R800+, now I get this bill and I am so upset and disappointed with Telkom.