Worse network company

I've asked them in January to change payment date to my salary date, they refused more than 3 times, I will pay my account on the 15th and they will suspend my pure adsl month end of the same month, this was done monthly until I stop payment in March, they told me if I don't pay in 5 days my account will be cancelled and indeed I didn't pay in April, they kept on billing me till today, they have been debiting my account for more than 5 months even though I was told in April my account would be cancelled on April....this is the worse network company