I keep getting calls from man with foreign voice saying "This is not a sales call, but only a survey...Do you have smoke detectors in your house?" I probably got about 6-7 calls within the last 6-7 weeks. I never give them an answer, and I asked them to take me off their call lists more than one. So I started writing down the numbers the last two times - my caller ID showed "Unknown" 561-300-8724 was on 1/25/11 and today 2/21/11 on my caller ID, it said TSS Inc. 978-570-2411. I think it was the same guy's voice using thi... read full review »