Service cancellation

Hello Peter<br> I called and wrote a letter for service cancellation to ADT on the 23rd January 2015 and requested them to cancel my service for alarm system in my house.Even today they never responded to my request.I wrote another letter on the 3rd of February after i have seen them deducting premiums from my bank account,with no respond again.And i called them again on the 3rd of March because they deducted premiums again on the 28th of Feb and they deactivated their system(meaning their alarm system in my house is OFF).I made a call again on the 3rd of March.The lady who was helping me said my request was loaded on the 12th of February but still not cancelled.She asked me to write a letter of cancellation again and attach all the letters i have sent before.Even today i dint get any respond that my account has been cancelled.Its frustrating because they deactivated their alarm system while their busy deducting my money.I am no longer under contract.I was getting their service monthly.Please help me Peter.I want my February premium back into my account.<br> <br> Thanks