[fabrizio89]

I’ll try calling tomorrow since I’m short on time today.

Good.

A lot can be said over a phone call, as opposed to an email message repeating the same content, thereby not having the opportunity to question them and speak In your defence there and then.

Hopefully they can tell me what inconsistencies are they talking about?

You can remain on the phone until your concerns have been answered.

How am I supposed to address them if I don’t know what they are?

That's precisely our point throughout the entire claim.

Thanks again for your invaluable help.

You're very welcome.

So, here goes a long overdue update:

Complaining with amz reps about the police report was going nowhere so I gave up on that approach a decided to go for the sealed box method. I was aware it would be a bit risky and suspicious because of all the situation but I decided to go for it.
I contacted a rep again and said my account had been accessed by a flatmate when I was away and that he made the unauthorised purchase.
I requested the return and he gave me a label.
After a longer than usual amount of time and some more pressing they finally issued the refund.
Once again thanks for all your assistance and help.