Non customer still receiving nuisance calls and sms messages

I am not a Netstar customer however due to a family member whom I no longer have contact with, listing me on their profile as an emergency contact, I continue to receive sms's and calls regarding the activation of the alarm on this family member's vehicle, despite the fact that I have made contact with Netstar requesting them to remove me as an emergency contact. I have received calls at 03:54am in the morning!! This is completely unacceptable!!