Horrible service delivery from ADT

I rented a alarm system at ADT last year March 2017 the agent that sold the alarm rental to me told me that the alarm has a two year warranty. I contacted ADT to let them know there was a problem with the alarm system,they told me the warranty has expired I didn't even have the alarm for a year yet. When I called customer service the agent told me their technician are very busy and I need to pay a R350 for a technician and they can only come out in two weeks but come end of the month they want they're money. In January they debited my account 5 times my monthly bill but when it comes to delivering well this is what you get.