Convert to Prepaid

on the 20th September 2018 after being told Telkom was offline for 2 weeks and could neither cancel nor downgrade my ADSL line due to fibre installation, I received a ********** 979_1: ********** 0. this was only after constant calling and being told to go a store as telephone cancellation from contract to prepaid is not done via telephone but in store. I visited the Tygervalley shop and there I was given an internet link to cancel/prepaid. after going online I could only cancel and not move to prepaid and after telkom recommend me. And whilst this being procrastinated I was billed for September and October for line rental and ADSL and I never used a single byte. I am not happy that I tried to go to prepaid and have not yet had my request completed and Telkom continues to bill

PLease assist