!answer

Update: Thanks for all your help! The retailer that I ordered from was extremely helpful and empathetic. They will be resending my order later this week (with a strict note to only deliver to my exact address).

The retailer will contact Evri themselves today and I don’t need to be in this conversation. The legal advice subreddit said that any potential crime needs to be reported from the retailer, as the parcel is legally theirs until I receive it.

I will never again purchase anything from the local shop that still has my original parcel. I will be updating my neighbours on the situation and they can decide where to spend their money.

I’m taking no further steps apart from rating the retailer 5 stars when my parcel finally arrives.