I keep getting Uber Eats emails with offers for $20 food free. So I go to the website, order about $15 of food, Uber still wants to collect $25 from me for all

I keep getting Uber Eats emails with offers for $20 food free. So I go to the website, order about $15 of food, Uber still wants to collect $25 from me for all the various fees and charges, but oh, they don't deliver to my area and the offer is only for delivery. Oh well, I guess I won't be spending an additional $10 more than normal to get my food "free" today.