YANBU. I have had a number of occasions where I have taken prescriptions into Boots, and they have said it will be 10-15 minutes... So I go off and get a few other bits that I need, and pop back 20 minutes later. Only to be told the pharmacist has gone off for lunch, or on a break, or he is in the 'consultation room' with someone, doing a 'medicine review' that sometimes takes 15 minutes! 
And although my meds are sitting there in a little basket, (having been pulled off the shelves by the pharmacy assistant,) I can't take it, as it needs to be 'signed off' by the pharmacist - whatever that fucking means! 
Why he didn't do that before he fucked off into the little room for the medicine review just eludes me. So I stand there and wait like a muppet for at LEAST 10 minutes, just for the pharmacist to come out and look at my 2 prescription items for 3 seconds, squiggle a line on the box, and say 'Mrs DD?......' 'Can you confirm your address......?'
I hate that too. Every fucker in the pharmacy knowing my sodding address! WHY do they do that WHY?! All they need to read out is your bloody name. The chances of someone with your exact name being in the same pharmacy as you, at the same time, waiting for a prescription, is virtually zero. And in the extremely unlikely event of that happening, you would spot it immediately, as soon as you looked in the bag!
And as I am quite rural, I cannot go to anywhere else, because the Boots pharmacy is the only pharmacy in our little market town. (The next closest pharmacy is 15 miles away!)
In addition to the above, 3 times out of 4, there is something they don't have in, and they have to order it in, so I have to go back!!!
The staff are fairly OK in the Boots my local market town, but in the Boots in my closest big town (15 miles from me,) they are awful. Unhelpful, and miserable. On the occasions I have gone there, I have actually stood there for 5 minutes before being acknowledged. I wonder sometimes if I'm invisible. 
Many, many posters on here complaining and saying they have had many bad experiences with Boots pharmacy. All these people cannot be wrong. 