Now billed for excessive reponse

Further to my previous complaint of system not functioning and being woken up with calls that the alarm had been activated we have now been charged two amounts for excessive calls. If Chubb went back and listened to their recordings they would find that my husband stated every time he would not pay for any excessive call outs as it was Chubb's new system that was fitted that was not functioning. I phoned and emailed and have had absolutely no response. I have been debited with two amounts, one on the 1/8 R550.62 and again on the 1/9 R752.40. The name of the business is Boardzone Kitchens