Disgusted with beacon chocolate

On the 25th July i had purchased a beacon 300g a packet of chocolates. The package date was June 2019 and the expiry date was 2020 and I was disgusted to have opened it and found a live maggot. I was more infuriated as i had distributed them to some of my clients and few of them had already eaten them before I could have discovered the problem. Beacon needs to be thoroughly investigated.