Poor service and *********** technicians

In late 2018 technician advised on a contact sensor for outside gate. Had issues from day 1 and separate technician said it needed a water casing. ADT finally fitted this in April 2019. An hour after fitting, I was unable to arm my system due to a fault with same sensor. No manager available at ADT to make decision, the technician not willing to come back and useless support staff trying to tell me to switch off the chime. We clearly pay for ******* service and the first thing they tell you is that any technician after hours will have to charge call out rate. This after they caused the issue. Is there any accountability are ADT and can any of the management make themselves known so we can talk to you rather than hide behind call centre staff with no authority!!