DEBITING MY ACCOUNT WHEN ITS CLOSED

I have previously reported Chubb and they once again promised not to debit me again, yesterday i was debited again. Val Pillay said the previous debit to this one was because they collected the alarm system and i did not deliver it so they charged me ? i should have been told there would be a collection and then I would have delivered the radio myself. They also promised to credit me for amounts that were debited, this has not yet been done and now i have been debited again ? I am at my wits end with Chubb Security. I have never ever had such terrible service , they cannot even close an account which cancelled in October 2014 !!! All they can do is come up with petty excuses and promises. I have all their emails and all my emails and when i try and email them they say they dont receive my emails , only when i threaten them then suddenly they receive emails ? I have never been so frustrated and irritated with a company as i am with Chubb Security. It has been almost a year since i cancelled with Chubb and i think i have been extremely patient. My only other alternative is to now hand them over to my attorneys.