I'm not getting your math. If the payment should have been $10 and they paid you $25 wouldn't it be $15 over?
Regardless, you did the right thing. I have been overpaid as little as $5 and as much as over $100. I always notified the MSC. Obviously the higher payments were withdrawn. With the smaller payments it has varied. A couple said it wasn't worth the trouble to recall such a small amount and one even said they forgot to tell me they added a bonus I did not request to one of my shops
Equal rights for others does not mean fewer rights for you. It's not pie.
"I prefer someone who burns the flag and then wraps themselves up in the Constitution over someone who burns the Constitution and then wraps themselves up in the flag." -Molly Ivins
Never try to teach a pig to sing. It's a waste of your time and it really annoys the pig.