Mercantile Adjustment Bureau review: Fraud/ Invasion of privacy

Mercantile Adjustment called my home at 7:04pm on Saturday May 14 and left a collections voice message. They have invaded my privacy illegally by calling a phone number that they dug up somewhere. I have never had a bill go into collections and and have never been late with a payment in over 40 years. I have had no connection with Mercantile in the past and do not want their whiny phone messages. I do not have any bill in collections.