I don't understand why you are associating (416) 318-0000 with the original number (416) 525-0000?? You say they are a collection agency, yet fail to establish the connection between the two numbers.

This number called into my business line, left a message that digitally deteriorated/distorted at the end.  It seems that it is a VOIP number.  I returned the caller's message and it was a legitimate inquiry.

Called me at work.  Knew it was bogus from the 0000 ending.  Didn't answer, didn't leave message.

YO, they just called our department, which has an extention (!).  No message.Weird.