Ignoring a dispute.

There was an oversight on Chubbs behalf on letting me know of a low battery signal. A technician came out and after checking he replaced a battery. If I had been informed I could have replaced the battery myself. Therefore saving on expenses. I immediately logged a dispute with Chubb. After they acknowledged their mistake and ignored further communication to resolve the problem, I paid the account without the technician fee. They then subsequently deducted the whole amount from my bank account. Why must I pay for Chubb's mistakes, please let me know if you need any of the e-mails sent between Chubb and myself. I do feel that it would give you a better insight into the problem I am dealing with.