empty tin

Good day

I bought 4 pack of monster energy drink ultra red on the 31 Aug 2023 at a Spar West Park in Pretoria West. drank one and put the others in the fridge. I only noticed last week that one of the tins is empty, but it is still sealed. which means I bought 4 but one was empty. I still have the tin with me, but I don't have the receipt.

Regards A very disappointed customer