Who called from 6086618137

I to received a call from this number and they left no voice mail. When I called it back it told me everyone was busy then when someone picked up,some guy said all of their calls are monitored and recorded so I hung up.

No voice mail left and I didn't call back.

Called 6pm 7/15/2015 asked for my wife lady on the phone said she "was a manager". I asked manger of what would not tell me number is now blocked.

Received several ambiguous sales calls from this number but no one gave me any real answers as to why they were calling me.

Called (one ring), Answered but did not talk, hangs up. This is a computer calling people. Collection agency's like to play a game with you. They set there computer to call you, ring one time then hang-up. Your phone will not get the caller ID on one ring, so they are free of any liability. They ring you once and hang up, doing this many times and all hours. They do this just to bug you and there is nothing you can do about it because you don't normally get an ID, They need to change how Caller ID works.