Just a fat mess up

My account was migrated over from Nashua to Autopage. After receiving a statement (that was totally wrong) I was never debited for the amount. After numerous of calls and emails begging for them to sort out my account they finally deducted my account end Jan. 2 weeks later my phone was blocked- apparently due to my account \not being paid"- which in actual fact was on the 31Jan. I am now sitting on the 3Mar and once again my account has still not been debited. I am so sick of calling and holding on for hours only to be cut off 99% of the time. I know that in 2 weeks time my phone is going to be blocked once again due to o payment. I am sick of begging for them to take my money seriously this is ridiculous. I have been a Nashua client for 17 years now and never had any issues now I'm moved over to Autopage and having endless issues - How do I go about cancelling my contract with Autopage. I have had enough now."""