I've recieved calls from this number more than once, as well as similair numbers all in the past week +. THey have never left a message, and when i finally called back the first number it was busy and the second number i called a lady answered 'Chicao MDA' but i have no clue who they are or what they would be calling me for.  I'm thoroughly annoyed!

The other #'s i've recieved were:
312-836-3397
312-836-3392