It's a collection agency called Global International.  
They have a website for consumers that are getting called:
http://www.globalcollection.net/Consumers.aspx

Had a message on my machine from Mr. Beaver saying a phone call was required for a matter at their office.  This matter needed my "immediate attention to avoid any possible further action from occurring against [me].

Number to call back was 1-+1 866-993-1995 ext. 8655.  Message was repeated.

Very vague information, sounds very suspicious.  Not calling back.

Left message on home phone to call or Mr. Beaver would have to take action.  Told to call 1-+1 866-993-1995 Ext 8655...won't be calling.

Found a message saying that Nick Hines needed a call back, that it was urgent I call back.  Number he left was 1-+1 866-535-0623 ext. 8723.  I called back and left a message that I had returned his call.  I won't be answering any others. I'm in Northern Ontario.

Had a message on my machine from Mr. Beaver saying a phone call was required for a matter at their office.  This matter needed my "immediate attention to avoid any possible further action from occurring against [me].Number to call back was 1-+1 866-993-1995 ext. 8655.  Message was repeated.Very vague information, sounds very suspicious.  Not calling back.