I get a call from this number at least once a day.  It is unsolicited and they never leave a message

This number calls 3 times a day and never leaves a message.  When I try and call the number back it says please stay on the line and I have waited.  Please stop calling or leave amessage.

I am requesting in writing to stop calling my cellphone number and job number.  Whoever is MCS Collections.  You are bogus!!  Stop the Robo Calling before you get sued!!

Said they are MCS Collections. They were looking for someone else and "kindly" removed my number from their database.

MCS Collections,  
Inc.
725 South Wells
Street Ste 501
Chicago, IL
60607-4521
(312) 676-7000