Cadbury / Mondelez going down hill fast

We brought a slab of Cashew & Coconut chocolate and found a maggot inside the chocolate still alive. The expiry date was 10/10/2025 so all good.

We are on a strict diet at the moment and thought on my birthday we would share a slab of chocolate, my wife bit into it and knew something was wrong and when she spat it out the worm was wriggling around, I took pictures and a video of it.

How can such an age old company be selling things like this these days?