Calls home number several times a day. registers out of area, leaves no message

Do not want any more calls from them

Calls my work supplied cell phone, lets ring once, hangs up

recieved several calls from this number to my cell, and i have a cell company that REFUSES to give out cell numbers to anyone unless they have a court order, so it is beyond me how this person got my number as i don't put it out on any thing on the net and i do not answer calls from numbers i don't know but it sounds like a saginaw michigan phone number

called my mom on 04-17-08.  claims to be from Dish Network.  Very rude when she said she wasn't interested.  Her cable company is going out of business but she has until the first of the year to switch to something else.  He even wanted to come to her house.  when she told him no he said he wouldn't come to her house anyways because she sounded old and rude!!!  Then he hung up.  Caller ID showed Saginaw, Michigan