I'm not sure I'm following. You went to the shop, they gave you the keys, and you couldn't get it to start.
Why didn't you walk back in and say "the battery's dead, you need to jumpstart it"? Or have roadside service jumpstart it? That wouldn't have cost a thing and wouldn't have required any ability on your end.
Sometimes my shop is a bit slow - they only have one mechanic who knows how to work on it, they only have one lift that can handle a motorhome, and they are busy. But they would never had ignored me if I came to pick up my RV and it wouldn't start. A simple "help" and they would have been out there checking it. The last thing any shop wants is an unhappy customer in their lobby.
