Telkom adsl to fibre upgrade billing issues

I have been a Telkom customer for 28 years - I have an adsl line and wanted to upgrade to fibre. I went to telkom and they said i must do it online. I did everything and a fibre line was installed. At the end of the month I got a bill billing me for fibre and adsl. I phone telkom and tried to sort it out. I was creditted with some money but this month i have the same problem, I asked telkom to help sorting it out but get referred to do it online. i went online but the accounts are confusing and i don't want to cancel the wrong thing. also the adsl says it's on a contract for another 4 months - BUT I upgraded to fibre.. can someone please phone me so we can sort this out. my telkom bill is about r1500 this month again ! thank you