Kind of hesitating to post but others not raising fact that owner appears could have done a few things differently. Since no background was provided which is needed before anyone passing any judgement, there are scenarios where more, detailed hovering over this transaction might have prevented this outcome.Where was the bus before taken to shop? Was it running or broke down on road out of town? Did the owner ask around for references while shopping for a repair? Did the owner do any shopping or vetting of shops? How did the owner make payments for the repair? Lump sum upfront, some to get started, then balance at end? Did the owner keep in direct and constant communication with shop as the repair was being done or waited for call saying job was "done"? So many factors involved that it is pretty hard to know what the hell really happened. This is all second hand at best info.
Think maybe if your engine goes south, you think it's toast, and you like your bus, a company like American Fleet Inc. would be the first I called. If mine blows up, it's gonna make somebody a nice tiny home. You pay the haul.
This was a American Fleet engine the gear train failed another 50D alternator got it