Bad service from Mr D - system issues but customer held liable

I support Mr D Food atleast twice every single month but whenever I place an order for Burger King they ALWAYS get it wrong so I decided to do McDonalds instead but it didnt stop them from messing up again. I can remember my exact note that I added 99% word by word but they said I added nothing then surely they had a system glitch cause I definitely added my notes and exclusions. Do I need to take screenshots when I place an order everytime because they have system issues. Really disappointed as no one called or bothered to do a further investigation as I requested. Definitely losing a regular customer and I'm sure there are many more experiencing the same from them some time or the other. Bad service from all the consultants who responded just copying and pasting their response. "You received what you ordered." Really pathetic R250 wasted and not 1 of the 5 burgers ordered was correct.