Problem with courier from Amazon.

Contact Amazon. Their customer services are really good. And your contract is with the vendor - in this case Amazon.

If they're saying it's been delivered, ask for proof. As it's EVRI, it's usually a photograph taken by the driver. If they can't provide proof of delivery, raise an official complaint with them regarding a missing parcel.

'They've tried to deliver my package but there was an issue' will have been logged by the driver. But that clashes with Amazon saying it's been delivered.

Reasons it is missing include:

It's back in the warehouse, the driver took it, a member of the public took it, or it was delivered to another address.

You need proof of delivery as they say it's delivered. If not, a missing parcel complaint needs raising.

Any subsequent investigation should include a conversation with the driver concerned.

To clarify, is it Amazon or EVRI who say it's been delivered?

I've had the same issue several times recently.
I contacted Amazon and dealt with their AI assistant; just repeating that i wanted a refund.
It was then passed to a real person, where i carried on requesting a refund.
Eventually, they gave in, and refunded me.

I had to be very persistant, though.

Evri generally are really really rubbish. I try to check who is delivering my Amazon stuff and if it’s Evri, I will go to another seller….

I ordered a mop and bucket from Amazon and I received a small package containing a load of expensive makeup from John Lewis (clearly not a mop and bucket) which Evri photographed outside my front door. A label with my name and address had clearly been stuck over the name and address of the proper recipient.

I wasted loads of my limited time on earth trying to sort it out, only to end up returning the makeup to John Lewis and not receiving a refund for the mop and bucket which nobody would admit had not been delivered to me. I had even offered to send the makeup to Amazon but they said that would only complicate matters.

Both Amazon and Evri were adamant that my mop and bucket had been delivered, despite the discrepancy in the size and shape of the parcel in the photograph. Amazon would only issue a refund if I sent the mop and bucket back to them.