Hi Nancy. How frustrating. It’s rubbish when you waste so much time. I’m glad you’ve emailed Scotrail – I’m sure it will have an effect when many people do contact them.
However, I’ve never heard about them not being available on Thursdays or Fridays. Hard to get due to weekend popularity, yes, and none available on Saturdays. But they are, to my understanding, Monday to Friday. What’s the link where you found it said there were no Thursday or Friday BBs?