Telkom horrid service

After renewing my contract Telkom has been terrible i requested they debit every month on the 25th but they do not the debit every second month and cut my WiFi ... Every second month I find myself struggling to work and spend more money on data .. I went to the branches and called customer care to accounts nobody is willing to assist. I find myself having to fight everybody and all they will tell is that I didn't pay however they have been authorised to debit the account ... I have been from pillar to post and this is unacceptable.. when I tried cancelling I was told to wait 6months. It's been a headache working with Telkom really .