Price hike and less portion

I bought a large mutton curry through Mr Delivery at R140. The servings are ridiculous. The instore price is R90. So when purchasing through Mr Delivery they add R50 extra. This is true price hiking and ****************. When I went there to complain they blamed the price on Mr Delivery. Even though on the app it clearly says that I'm charged by Mr Delivery a price of R15 for using their service and R15 for the drivers tip. In total I paid R160 for a meal that hardly served one person. Im so dissapointed.