I know this is a suspicious phone number because every time it appears on my caller ID some one else with a different number leaves a message on my voice mail for me to call the person who keeps leaving a message from the collection agency. I don't know if this makes sense but it's not a coincidence.

United Receipts [or Resource or Re-something] Service: they're some vulture collection company- there's some phone lackey that makes the call & then they have you chasing them.  

By you calling back, it gives them legal legs to say that "you  returned their call & therefore initiated negotiations with their company".  they'll tell you that you owe X,Y or Z money [which you may or may not] & that they're collecting- don't give them the time of day- unless they legitimately own your debt [trust me- they don't] never call them back.

Just got a call from them.  No voice, no automated voice.  They did not call back.

Just Russ's assessment seems likely.

I just started getting this number on my phone. They just call, no message. If I don't know the number & they don't leave a message, they are not getting my time! Glad to see this message board.

I've been receiving numerous calls from this number 407-956-1502- which is an Orlando number.  When I returned the call to inquire as to what it is about, I was told by someone that it was URS ... but they would not tell me what URS stood for.  After 3 calls I learned that it is United Recovery Systems and that the calls were made out of Houston, Texas.  Thus, the number is being spoofed - which I thought was illegal.  This is obviously a vulture debt collection service and I don't owe anyone any money.