Deduction without installation since November

Chubb deducted money from my account twice without them installing their alarm system. Today someone from accounts said they'll send me a confirmation email but nothing came through, clearly that person wanted to get rid of me so that they can deduct money again. Its so frustrating and devastating to be calling the bank to reverse my money because this result in bank charges that are unnecessary. They call themselves a security company yet they take my money without installations, they break the contract we signed. I only agree to deductions if services where rendered. They are unprofessional and what they doing its *********. I have calling and sending emails since November but nothing is happening.