No customer service at all and bad billing management

I have only been with them for less than a year but since i started it has been non-stop issues, first it was getting connected it took weeks, then it was billing. I set up a debit order then one month they dont debit, so i pay then they debit resulting in a double debit and me having to wait for a refund. They promise me no the debit order is fine it wont happen again. So here we are, i am on the line now for over 20 min, then being asked to use the 'super-fast' whatsapp line and also waiting to be connected to an agent. Havent debited my account last month, now sitting with a double bill to pay again and no debit again. Trying to find out how to pay to avoid another double payment but seems like no one answers the phone. REally not good customer service experience at all. It just feels like a battle every other month or so with them. The service seems to drop sometimes as well without letting us know what the problem is. Trying to get through to a person is almost impossible. C-19 has hit other businesses as well with people working from home but they are answering calls and dealing with customers.. I will be looking to cancel with them