I had a similar experience with Hermes over the past 3 weeks.
I took a parcel to the 'parcelshop' and according to the tracking , there it stayed for 18 days.I went back to the shop to see if it was actually there but was told the parcels are all collected daily. Then lo and behold it appeared at the final destination 15 days late.
I also had a similar experience with them a few months ago when returning a parcel to Amazon. It stayed in the Hermes 'warehouse ' for 4 weeks but then the tracking number was no longer recognised. a telephone call to Amazon sorted that one out.