Please don't attribute anything untoward to me. Reputation is EVERYTHING in this industry. I would NOT suggest someone do something fraudulent, ever.
When you hire $PLUMBING_COMPANY to come fix a leak at your house, you don't care WHO does the work. You want your problem FIXED. YESTERDAY.
So... is it fraud if they send someone who is less experienced than the owner if it's his name over the door, if your problem still gets resolved? No, not at all.
So not knowing OP's details of the contract with $CUSTOMER, you can't assume either way.