Over priced!! Chicken tenders with fries is $12.9...

Over priced!! Chicken tenders with fries is $12.95. Without knowing that price we upgraded to onion rings for an additional $4. Brought the food and received 4 small tenders with 4 small onion rings for $16.95. Manager didn't see a problem with this. Owner hasn't returned my call. The 2 person sizzle dinner was cheaper than the tenders!!