Stuggle with ADT

Good day Iets been n few months now that Iam struggeling to get an answer form Adt we Moved in Martch I signed a contract for the beams to be installed in the new house. I was not aware that the contract was renew for another 24months. I want to cancel my ****ract but nobody can help me. They send The technical department will come and collect the system but I paid R3000 for the beams... I just want to cancel by ADT cuz I cant pay the amount anymore and my contract is 24months old from 19Sept 2016