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.