Dr Pepper complaint: Flat Dr pepper

My complaint:

This is now at the 3rd pack of Dr pepper that I have bought that multiple in the pack have been flat. Two of them were from Dollar general and meridian Texas and they were 12 packs. We ended up having to throw them out. The last one was a 24 pack from Walmart in cleburne Texas multiple of them feel squishy almost a little deflated and extremely flat.. we love Dr pepper and at first we thought nothing of it but this is getting extreme and becoming a waste of money.

Suggested solution:

Replace with non-flat Dr pepper