Over the next year, she didn't need to call him. So he calls her and says "you paid for a service contract, so I could come out and make sure everything is working properly."

She said okay and remembered that the handle on her toilet was sticking, so she might as well get that fixed. While he was "checking" everything, he said the bolts on the toilet tank were rusting and it's only a matter of time before they leak and she gets a flood. So she said okay, fix that. He took the tank off and replaced the bolts.

Her bill for all that - $400.

Is that reasonable? Does anyone know what that type of repair would typically cost?

But the real point is- toilet bolts are usually rusty, and they usually don't cause big issues. He scared her by using the word "flood" (if he did indeed) when in fact they would leak modestly for a long time before causing a flood. And then he charged her $400.00 for a job that didn't need doing, is my guess.

The $39.00 "service contract" is a dodge to gain entry. He took advantage of her age and ignorance to make money off of her.

Like asolo said, "Not there. Can't tell." But like him, I strongly suspect she got ripped. He owes her $350.00, call it $345.00 allowing $5.00 for new bolts, since she wasn't supposed to get charged for the service call under the terms of the original contract.

Not a plumber and definitely biased, but that's my take. YMMV.

Mark