I've only had one of those with Hermes click & collect and it turned out that Argos had refused the delivery because their code wasn't clear enough on the parcel. Oddly, they took it the next day without any change, so it's not always Hermes. Usually, but not always.
I don't do C&C now for 2 reasons: Argos closed the local branch, and our current normal driver is a very pleasant young lady, who just happens to be quite pretty as well.