So sorry you have to go through this. My mother-inlaw is 74 has always enabled my son. She just cant say no to him. She lived with us for 9 years when he was a baby. Maybe they won't listen to you but what about printing off some literature for her to read. They are so set in there ways at that age. My mother- in- law will not take my son in now. it came from listening to other people. If his calls are upsetting you dont need to talk to him. Addicts are like small children when they dont get there own way. You need to look after yourself, as for your parents sounds like your just banging your head up against a brick wall.