Complaint Review: American Opinion Research Inc

My son, who lives in Michigan, got a check in the mail from this company (American Opinion Research, Inc.) with instruction of how to use $300 of the money and then forward the rest to another person (Karen Scott  121 Lake Avenue, New Castle, England) who was next on the list.  He followed all the directions to the letter and is now over $1500 in debt because of this.  Before he did anything, he called the bank to make sure it was a valid check and the bank verified that it had cleared. 

After that, he made the purchases he was told to make, then bought a Western Union money order and sent the rest of the money to the next person, Karen Scott.   Shortly after that, he was advised from his bank that he is overdrawn by over $1500 in overdraft fees because this ended up not to be a valid check.  He has made phone calls to the U.S. office and spoke with an Ashley Wilson who turned the phone over to Mike Anderson at the 1-403-400-4672 number.  He was transfered to a Carol Simpson in Canada, then to a Sandra Owens, 28 Warwick Road, Earls Court  SW5 9UD, London, England, all to no avail. 

All the information I have is this:  American Opinion Research, Inc , street address:  3675 Hurontario Street L5B IP3  Mississauga, On.  Fax#: 1-636-548-6572, Phone #: 1-403-400-4672.  All the extra addresses and info is as follows:  28 Warwick Road,  Earls Court  SW5  9UD, London Eng.  My son is bipolar and is an easy target for these types of scams.  If you could give me any information or help on who to call there in Michigan, I sure would appricate your valued opinoin or help.  Thank you in advance for all your attention and co-operation in this matter.