Incorrect billing

I took a contract with Telkom on 31 August 2017. R199pm for 10GB for first 3 months, R100airtime pm and sms's included. I have not received the 30GB as promised in the contract. I have queried this multiple times and have not received anything. I was billed in November 2017 the amount of R1367 and no data usage statement has been provided to justify this amount knowing that I haven't received the bundles Telkom claims I have bought. I am now being billed R798 for the month of December for bundles that I haven't received. I want answers and all Telkom tells me over the phone is that there is nothing they can do. Please can someone call me and help me sort out my bill. if not I am going to the ombudsman and will definitely publicize this injustice.