Telkom billing service issue

I signed up a new package with telkom for 10mb uncapped on the 25th of November 2018. Agent informed me that the first month will be free. When I requested an ivoice last week it came with a balance of R1981 and now its as of the statement I received yesterday R2891.

My package is R807 which includes rental line, 2 gig simcard, router etc. Telkom is charging separate for all the above line items. I have spoken to our Agent but she is not taking this matter seriously. I have read enormous comments about bad service Telkom is offering to their customers and now i can attest to that. Please fix my billing otherwise I will not pay for your disgusting service.