Charging higher prices under the guise of free delivery? 20 rand more!

Using the Mr delivery app right at this moment and they are saying free delivery for Pizza, nice... Except the Pizza now on the Mr delivery app or at least on my app says the 30cm Mexicana is 132 rand. Phoned Pizza perfect and its 112 rand. So they are charging more for the Pizza and giving you 'free' delivery pretty ****my as I use the app all the time. I might reconsider ever using it again.