Defiantly looks mixed but a cute pup and he will love you the same no matter what he is mixed with. The people sound shady though and defiantly sounds like a backyard breeder.
R.I.P- Smokey my GSD/Husky. You are my hero, my heart, my soul and you will forever remain in my heart. You were a true companion. I love You and miss You so much. Run like the wind!!