I will say this for the US MA's, they are alot nicer and helpful than the UK ones.

With that said, you can't expect an MA to teach you all these things you requested. The PRO store is of a professional environment. Most the people that shop there are make up artists/models etc... They know what they are going in for. If you want to be 'taught' something you generally have to make an appointment, this is how the MA knows you WILL spend money. Its a business, so they are looking for a sale, in big dept stores they generally help the wealthy looking.

I have to say, its so terribly annoying when i'm asked to to do a look with colour and then have the person unsatisfied, as they had invisioned something else. Being a little bit more clearer would definately help the MA. Not every MUA is a mind reader, remember that. I think that you're expecting too much when im assuming by your post, haven't even spent much money. From your indecisiveness, the MA probably thought they wouldn't be able to satisfy you, so they left you.

If you are really going to haul out, my advice is book an appointment for a make over and you can ask all the questions you want.