Anyone else have issues with crazy numbers?

I don't know why but in the last two weeks I have been receiving calls from very odd phone numbers.  One was from Salt Lake City, UT, one from El Paso, TX.  Another that called today was showing up Unknown.  Then last week I had a number show up 0000000.  I have never seen that before!  I don't know if my phone number is on a spam list or what.  A lot of the times the person would call while I was at work so I wouldn't be able to answer.  Who ever it was would not leave a  message.  When they call in the evenings, I would answer and it would be followed by a long pause and then someone asking for me by name.  Always they had a foreign accent.  Once it was an Indian accent, once Australian, and once an Asian accent.  All asking odd and various things.  I have told all of them to take me off their list, but the next day I get another odd phone call.  The one today told me that I was to receive medical compensation.  Then asked if I have ever used the IUD Mirena.  What the heck, like I would tell a complete stranger that information.  I wonder if I'm the only one getting these strange calls.  I'm hoping they will stop!