Disgusting service from ADT

A few months ago ADT came around offering "FREE Alarm systems" which included 2 Door Magnets, 2 Passives and the control unit with radio link up...I explained to the sales ladies that I have an existing alarm but it required two zones to be repaired which were not functional at the time due to faulty and missing magnets respectively. They did an inspection of my setup and advised that the alarm system will be brought up to scratch when their technician came on site, at no additional cost. I also needed my key fobs to be reprogrammed to which they also agreed to have done at no cost. When the technician arrived, he said that only the key fob will be programmed for free but to replace/repair the other two magnets would cost R98 ex VAT each...He programmed my remote, and disabled my arming beep which I did not request, didn't even leave an ADT display board outside the property and left...When I called the sales lady she said she will have it sorted out and he will be sent back for the board and to repair the zones..After weeks I had to follow up only to find that she said it's too much of a process to have the technician come and install the board, she will drop one off for me to put up outside...this was ok with me....but she also said that the free magnets and other alarm components did not apply to the offer any more since I have an existing system and did not take their offer (If i did, it would mean removing a complete alarm system to replace it with a 2 zone/2magnet system)...She herself was prepared to pay for the two zones being repaired from her pocket which I declined....What's worse is that when I questioned how will future problems with the alarm system be handled she explained that I am paying a maintenance fee in the monthly premium which will cover future issues...On the day of installation the technician said my existing battery was too old and the control room would not receive the signal and he put in a temporary battery...unbeknownst to me, he removed it and left the old battery back in after testing...When I complained about the terrible service and the confusing business model/false advertising/misleading terms of service, they had a manager call me...When I explained to him what my issues were, he said they were going to charge me for a call-out even if it's just to reprogramme the key fob which stopped working!The worse was yet to come when they put an additional R9,50 on my debit order at the end of September 2018...I asked the sales lady to query it for me and its been two days since I have heard from her...I demand for someone in a senior position, capable of explaining to me why they feel they treat their clients this way and there is no repercussion for it...I want to cancel my service as soon as possible without having to involve my attorneys and/or the CPA...I should have known there was going to be trouble when the ladies mixed up the monthly fee with the annual license fee already...I have forgiven much, but what kind of world do we live in where we have to be penalized for buying into a service. I have all call recordings and message trails at your request....ADT, please just refund my money -prorata from 1st October 2018, come fetch your equipment and leave me in peace please....Thank you.