Pathetic Customer Service

Been a client for over 15 years. Spent an hour and a half on my prepaid phone today trying to find out why they say I am in arrears. Find out that they cannot do the drbit order on my normal date (7th) and they claim they gave me notice (which was not received). So they lodged a debit order on the 1st which was returned. They have now suspend my service, after they offered me a discounted rate today and I provided a new account number (which they confirned) will be debited now for the arrear premium. Still they disconnected my services. I cannot make a cash payment now as they said they are going to do a debit, but inconvenience me by disconnecting my internet service. Their customer service are the worst, and after 15 years of never not paying, and due to their lack of communication, this is the treatment their customers receive.