Expecting glass ware to be wrapped at the till

That’s vey poor service Lilypops and certainly warrants complaint.
Had they provided a little recyclable paper you wouldn’t have been forced to purchase plastic bags.
A lesson to us all, carry paper in your shopping bags if intending to buy glassware. In fact carry paper all the time as most of us probably buy on impulse.
Crazy world.

Yes I think I should have asked for a manager, but a queue was building up behind me and I was trying to get the glasses wrapped up , I think I will ask next time I go in to the store ,why they don’t give paper anymore to wrap glass ware. Even some used bubble wrap would have been useful.

You can take them, in your trolley, to the customer service desk for wrapping. One of our local supermarkets has a 'homeware' section, and they will wrap at their desk. Otherwise, I take to customer services before doing the rest of my shop. I don't often do this, but did about 2 weeks ago.
There should be a sign saying this, so you don't get put in such a daft position - and the assistant should have told you!

It happens all the time I think.
I would probably have asked to see a manager as they must have got to the shop in some packaging.