It's frustrating to hear that.... You know as a young RV'er and one who has rebuilt two coaches & does all my own home repairs, it is incredibly difficult to hear stories like this.
Why is it so hard "to be respectful & do the job right"? I just don't understand this stuff at all. At least give a call back.
Kind of brings out the "business" side of me. "On site RV repairs - can't fix everything, just 95% of everything". Just be honest, up front, give status updates, coaches can stay at home. Flat labor rate. Parts ordered in custy's home or over internet in front of them WITH their own credit card so they know they aren't getting ripped off.
I dunno. It just makes me mad hearing about stuff like this. Why not give a call every 24-48 hours to the customer to give them an "update"? Let them know the repair shop "is working for them"?
The OP was very patient. That service was horrid.