This is from Thompson Creek Windows. If you ever stupidly sign up to get a quote for new windows (as I did), they will call you forEVER afterwards. I finally just blocked the number to not have to see them call day and night (and weekends).
I received two phone calls in two days from 301-306-5290. My phone rings but there is no one on the other end. I called Thompson Creek for the first unwanted call, and then had to repeat for the second. Thompson Creek says they have no idea why this happens. I think it happens because they want to phone harrass--I cancelled a scheduled meeting well in advance and then the nonsense phone calls started. I did call to complain to the Thompson Creek operator.
I signed up for an estimate and decided to cancel and low and behold the calls started coming!! First they started as restricted calls and now this number!! They are a pain in the rear. I will never have anything to do with them, ever!!!