Unprofessional technicians - Shane & friend

I had a perfectly working alarm system with a different company, I then decided to jump ship and move to ADT, biggest mistake made. A sales person Musa and another technical guy came to my house to conclude the contract and check my existing alarm. Everything was fine and they checked and verified that the current alarm I had worked perfectly and NO need for a replacement, that ADT will ONLY connect their radio to link for responses. Friday 27 February they sent me 2 \technicians"(one seemed like he was still in training coz he couldn't get the system to work. When they walked in my house"