Very bad service

After losing my mother, my father moved in with us and on the 25/11 sent an e-mail to customer service to cancel his service. They responded by saying he had to cancel on the App to which he rep**** he did not have the App. They sent their condolences and said that a service representative would contact him. On the 30/11, he e-mailed again to say that a representative had not yet contacted him. No response. On the 6/12 they acknowledged receipt of his cancellation, but he would now have to pay an extra month due to the contract being a calendar month notice and would only now terminate end of January. I find this ludicrous and very upsetting as they have accepted the cancellation via email, just not from the original date. Not at all impressed with this kind of disservice.