REFUSE TO UPDATE CONTACT INFORMATION

I have requested that ADT remove my cell number from their system as a key holder on numerous occasions, however this morning alone, I received 3 calls from them regarding an alarm activation of a business that I am no longer part of. I think I must have repeated my request at least 10 times when they called me. Does ADT not monitor their call centre calls and follow up? They are wasting time by calling me and in the case of a real emergency, their actions could lead to losses to their client.