Tell them you are "Gary or Sue or Brad" the "deceased" family member down for his/her funeral. Please stop calling because it upsets the wife/husband of the "deceased". In other words tell them your DEAD. It works, you will now be entered as DECEASED. The calls will stop. I do it all the time. About 90'ish days tell the first caller the same thing. It works.
The reason they start calling again is because your name gets back in the system through all the stores, banks, PayPal etc. Just tell them your DEAD....again. It works.