disgusting service from ADT

disgusting service from ADT, I had a consultant from ADT/Fidelity to come and speak to me about the services in July 2018, my information was given as well as my banking details even though there process is to check if you are approved before you sign up and alarm is installed.

I was approved for the alarm but never accepted (as I found a suitable security company for my area) a client, up till today my money has been taken off as a monthly debit order even after calling them several times to cancel it on the system and speaking to the supervisor herself in September to remove my account.

I received a email from the supervisor and she cannot tell me when my money will be reverted back into my account, I hope this is sorted as soon as possible.