Another bad experience with Mr. Delivery

We ordered from Mr Delivery twice and got an incorrect order twice. On Friday evening we placed an order and instead of Sprite got water instead. Not even soda water just tap water. Then on Saturday evening we place another order, Giving Mr Delivery the benefit of the doubt, and we pay for 2 double quarter pounders but get singles instead. When I phone them and ask them to rectify it they offer me a coupon?! I discourage anyone from ordering through their app, as you are only met with disappointment when your food is delivered.