Telkom Pathetic service

In the beginning of the year , I tried ADSL uncapped on a trial basis but realised that it was not what i needed and on 25 March 2018, I went to the Telkom office in Centurion and asked the lady if we could cancel the adsl with immediate effect as I had not taken out a contract and replace it with a LITE Wi-fi contract. She said yes and I took out a wi fi contract for the value of R249.00 . However I am being billed for R 274.30 and know one seems to be able to explain to me why. At no stage did i give Telkom permission to debit my account with any amount in excess of R249.00. As for the ADSL that was to be cancelled as far as I understand this has not been done, I was at the Telkom offices in Centurion on 13/5/2018 and as per their system the adsl is still active. Please note that I have requested the cancellation on line , on more than one occassion ( ref ********** 4) as the lady at the Telkom office showed me . However, it seems as i fthe case get closed and nothing gets done. This is ridiculous . I will appreciate it if you could please credit the wi fi contract with 25.30 and credit the adsl effective from 25 March 2018 as well as credit us for the period 12-19 March 2018 as we had no service due to cable theft in the area.