For about 2 years I have received mail and phone calls, apparently dealing with a collection effort, for a person who does not live at my address. At first I explained that they had the wrong contact number then escalated my effort specifically instructing them not to contact me again. All letters received for this person have been returned unopen stating "not at this address". The calls continue Early AM on weekends and during the dinner hour. If I see PCR on my caller ID I will not pick up the phone anymore. The last time I spoke directly to a caller it appeared that they were from an offshore call center as the English was broken and with a heavy accent. How do I get them to stop???