"The payment was supposed to be $55.15 and I was actually paid $35.456 an under payment of $19.694. I was paid $27.575 steem dollars and $7.881 steem power. You guessed it an under payment of 36% again."

You were paid $27.575 Steem dollars, and 7.906 Steem power - not valued in dollars, but valued in Steem. Right now, www.coinmarketcap.com values those Steem at $3.67 apiece, which makes about $29.01.

You haven't been underpaid; it's just that you need to check which currency the payments are made in, and account for it.

Have a good one!