starfleet

Hi, Just had a new clutch fitted, and as soon as we returned home noticed oil leaking, it wasn't in one spot but looked like it was dripping from a few areas. We returned it to the Garage who said, in their opinion it wasn't gear oil that was leaking but engine oil., and that it was from a seal beyond the gearbox that they didn't touch. Is this possible or is it a bad job? took some photos of the leak. any advice or help would be greatly appreciated.