Ice cold food, stale chips and a milkshake that was off

I placed an order on Mr Delivery, my order total was just under R200, I ordered a full meal and a milk shake. I received my food and it was ice cold and the chips were stale, I didn't eat any of it as cold reheated burger and chips is not appetizing at all, when I later decided well at least I have the milkshake this was at the point of going sour. I complained to Mr Delivery and was offered a R30 voucher???? really a R30 voucher for a nearly R200 spend?? this is not my first bad experience with Burger King I haven't ordered from them in over a year and was hoping that their service would have improved well it didn't at all!