If I buy a courier service and say “deliver there, and get a signature”, that’s what I expect. Appreciate it’s a hassle for you but really what are they going to do? Their contract isn’t with you.
Hermes aren’t good at “in progress” though, partly because there’s elements of their networking that’s done as soon as you book it in. I suspect from experience that the only way they can do it is to have the hub call the courier and say “take that parcel somewhere different”- they’ve done it for me a couple of times and done similar sort of interventions, like I remember one time a door phone was broken so they relayed on a contact number and said “call this number”. But it’s pretty inconsistent, as you’d kind of expect…
(source: I post a ridiculous amount of stuff by hermes)