Adt alarms

ADT kept phoning us because zones 8-13 was triggering the alarm. We saw on the cameras that nothing was wrong so we stopped them to send a vehicle out to the premises. We got an ADT technician out and he told us we only have zone 1-7 and no zone 8-13. Now they are sending me an invoice of R939. 62 for a rented alarm system which does not even had the zones they are invoicing me for. I have send them an email on 3/12/21 and they send me a ticket number, but nobody came back to me. I phoned today and the easy answer is to say is it because of load shedding and I have to pay the account.