Absolutely useless! App stated they had a parcel (my son's birthday present) on December 2nd. No updates. Attempted to use the web chat 3 times, to no avail (waited 90 minutes each time for an agent to connect). In the end, I had to cancel the present (12th December), sit £100 out-of-pocket whilst awaiting a refund, and buy the same present again.
Dreadful service. Wouldn't be surprised if they went bust at this rate.