I get a call from this # several times a day. they leave a message but never say anything. does anyone know who or what this is?

I have been getting calls on my cell phone the last few days from this number and no one answers right away.  Once there was a recording that came on right away and said something like "stay on the line for an important call" (but I hang up on all calls where a "machine" makes that response... it can't be that important).  Also, no message is left, if I have it go to voicemail.  I have no idea what this could be.

they call all hours, last night it was 8:45 pm  this morning it was 10:35AM

I don't bother to answer,and they don't leave a message, so I guess it isn't important

Have had two calls form this number asking for someone with the same last name who does not live here.  hey say hey are goig todelete this number but keep getting xalls about once a week.  Will not say who it is.

We received a couple calls over the last week from this number.  It comes up as West Asset Management on our caller ID.  They are a debt collector.  My wife had some sort of outstanding balance from an emergency room visit earlier in the year.  However the first several agents that called us that I spoke to hung up on me for no reason (conversation was calm, hang up was abrupt and unexpected) .  I think they tell them to only talk to the person they are collecting on (my wife in this case).  I ended up calling them back, having my wife authorize that I could speak to them, and was able to move forward.