appalling service, cancel my acc.

I'm appalled at the service received by ADT, they have shown and indicated in many ways that I'm no valued customer. 1st i had a battery issue and they confirmed I'll have to pay an additional 450 for the technical guy. I then said ill call to confirm when the tech can come. Then 2 weeks ago, my neighbours told me my alarm tripped but guess what, no one called me to inquire what happened. i called the team and agreed to have a technician visit my property. Agreed to the fee to. Technician visited the property and advised that the battery needed to be replaced. The tech changed everything and charged me R350. no one told me that i will be charged that amnt. even upon installation. i queried with the guys (darren) and told him i will not pay for the facility. Guess what, no one called me regarding my complaint and they debited my account with R856. This tech amount was supposed to be debited with my next debit order. worst part is, they still went ahead and debited even after my complaint. This is really appalling and i don't want to associate myself with such a company. Furthermore, my alarm tripped on sat, no call from adt. so what was the technician there for? Ridiculous servic