KFC Grandwest online delivery. Poor service.

I placed an online order from KFC grandwest. The delivery arrived with one burger short. I called the store and was told that it would be sorted today and I would receive a meal in place of the burger. I even contacted the support team who escalated the matter to the store. After waiting most of the day to be contacted, I eventually called the store again to hear what's happening. They insist that all the burgers were there according to their camera footage yet I only received 9 of my 10 burgers. I triple checked my food after receiving it and there were only 9 burgers. Someone had to go to bed hungry because there was food short. And yet I am being seen as the culprit. I don't even care about the burger anymore because the purpose it was supposed to serve had passed but the principle remains. Why would I claim a burger that I received? I now ended up paying for food that I didn't receive and KFC refuses to take responsibility. One of their arguments is that the bag was sealed when it got to me but lets be realistic. Its pasted closed with a sticker, which can be easily lifted and placed back. This is pathetic man. Im out here looking like a **** and there's no way to prove my innocence against a big company. I am NOT using this delivery service again.