Of course it may not be, but I received not one but two two claims from DPD that they had called with a parcel but I wasn't in. In fact I was, and heard nobody at the front door. Curious as I hadn't ordered anything and I believe anyone sending me a gift would have warned me to expect it.

It's a bit unclear but rearranging delivery seems to cost £3! I didn't bother.

The tracking number for both parcels were not recognised by DPD, so as far as I'm concerned it's probably a scam.

Be warned. I guess it might cost a lot more than £3 if you go along with these crooks.

It is a scam, I got an email last week saying the same, here is the warning from DPD:-
https://www.dpd.co.uk/content/about_dpd/phishing.jsp

Thanks for confirming it Davebm.

Just got another two. These mythical parcels are coming thick and fast!

Got one yesterday, allegedly two missed deliveries requiring that I must pay for a third delivery, I hope it wasn't the van that backed into my gatepost last night.

Too many scams out there. It's no wonder many get caught out.
Sadly, got to be on alert all the time.