Refund is way over due and you still billed me

I had a ADT account for over years. Never had an issue with them. I decided to close it and notified them in advanced as the monthly fees were way to high. I then got billed again and was assured my money would be refunded. Weeks went by and nothing. I then contacted them again and I was told my request was only submitted last week. I thought ok but my money has still not been refunded. The guy Riaan tells me one thing and then a totally different thing when I get feedback from them. By the list of complaints on this website I can see why people are cancelling their accounts. This is so unfair as companies like these get away with so much by processing debit orders they have no right too and then hide behind there I am waiting on feedback from management BS.