| Business | Phone |
| Aero Business Solutions 189 E Big Beaver Rd, Troy 48083 | (248) 526-0157 |
| Transworld Systems 100 W Big Beaver Rd 200, Troy 48084 | (248) 680-6676 |
| Boulder Services 2265 Livernois Rd 700, Troy 48083 | (248) 989-4840 |
| Rdk Collections Svc 1735 E Big Beaver Rd, Troy 48083 | (248) 689-6500 |
| Omni Credit Svc Inc 5600 New King Dr 125, Troy 48098 | (248) 641-1440 |
| Financial Alternatives Inc 3616 Millay Dr, Troy 48083 | (248) 528-9200 |
| Midwestern Audit Svc 900 Wilshire Dr # 350, Troy 48084 | (248) 564-6121 |
| Midwestern Audit Svc 900 Wilshire Dr 350, Troy 48084 | (248) 928-2000 |
| Somerset Collections 2800 W Big Beaver Rd 300, Troy 48084 | (248) 643-8014 |