Incorrect billing

I initially signed up with Telkom for a cellphone contract. When time came for me to renew my contract I was contacted by your company for this. I decided to go ahead and upgrade but changed the terms of my contract and now I have endless issues with the below:

3000 min for Telkom mobile numbers and Telkom fixed landlines

· 50SMS per day

· 1GB all network data

· 2GB Telkom mobile data for whatsapp, BBM and viber

· 69c per min out of bundle rate to other networks on per sec billing

I am now being billed by Telkom for all calls made to Telkom Mobile & Telkom fixed landline numbers which wasn't what I agreed upon.

I would appreciate a call back from either of them or any other manager to discuss the query above.