cancellation

i wanted to cancel my 5gig contract,The cancellation form was sent in 27 September 2017 and it is still active

I have called in to the call centre numerous times and each time I get promised that a case will be logged and nothing ever happens. I have also emailed the form to several people including resending it to the cancellations department and the mail box was full

Your customer service is appalling to say the least, I expect my money back for November as my contract was supposed to have been cancelled already.

I am a very unhappy customer and I hope my complaint will receive the uttermost urgency because I am not paying in December if this issue is not sorted out.