The worst hospital pharmacy experience I had was after waiting 4 hours for my 9am appointment, then having to go there because my medication wasn't available in the community.
It took over an hour and a half to get to hand it in, then another hour passed before I was called over to show evidence I was exempt from charges but signing the declaration as normal wasn't acceptable, so I was told I either had to request a letter to be posted from the dwp or pay as my entitlement letter was 3 months and two days old, stumped up about eighty quid to be told they couldn't issue a receipt or a form to reclaim it because they'd run out - and then there was another 3 hours, 2 of which I could see my prescription in the basket, before it was handed to me.
It didn't have one of the medications in it that they'd charged me for, there was a raffle ticket in there to 'come back and collect the other half of the main medication when we've got more in' (48 mile round trip where there was no way of checking beforehand if they had received another delivery, apparently), they wouldn't issue a cytotoxic sharps bin that was also on the prescription and to wait in the queue to raise these issues took me until the point at which they stuck a piece of paper up on the window to say they were closed. Oh, and was told to go to my normal pharmacy and ask for a cytotoxic bin/hand them in there or contact my council for collection when neither deal with cytotoxic disposal at all.
Got home, took them for four weeks, at which point the prescription was changed. The hospital pharmacy wouldn't accept them if they weren't in the cytotoxic bin that they'd refused to issue to me.
Changed hospital trust and consultant, got put onto an automatic delivery system with issue and collection of bins included. Had to go unmedicated for nine months as a result.
I know they're incredibly busy, but it really wasn't my fault, either, so being barked at and still not being able to get all I had been prescribed at a huge cost to me (I was ill and it represented a huge proportion of my income to pay out when I really, really couldn't afford it) and being in some physical discomfort due to hours waiting without adequate seating, wasn't my idea of fun.