The only problem I see is how she closed it at the top. She should have installed the whole two bags/bundles. I dont think the price is horrible considering what SOME people pay for AV hair which is always marked up. So worst case scenario she charged half for the hair and half for the install, cut color and style. Shoot, I do hair as a hobby and even I charge 75 bucks just for the sew in with no cut or color. So really it is not absurd that she would charge you $350 in the shop. She basically double charged you for the hair. Me personally, I don't care how good the hair or install is I will never pay $750 to do anything with my hair cause unless I never have to take it out and it keeps growing on its own that is a waste to me. Plus, why would you pay that much and never saw her work? You should have asked more questions YOURSELF before you even booked an appointment. Part of this is your fault for not calling yourself.
Re: consultation what else were you expecting? A closed mouth doesn't get fed so if you wanted more consulting you should have insisted or got up and walked out at that point. I'm sure the hairdresser is not a mind reader.
Next point: why wait until you leave to complain so there has to be another appointment set to fix it when it could have been addressed right then and there. You are the one who was dishonest and said you loved it.
What do you think would have been a fair price for the services you received? How long do you think it should have taken to color, install, cut and style your weave in a salon where you were squeezed in at Christmas time?
This is why I will not do hair. People expect miracles.
Plus I want to see how your full style looked when you walked out of the shop, not the pics of where you clipped it up to show us the tracks on top of tracks. I can't tell if it is bulky or not based on what you posted.
This is only one side of the story and we all know how that goes. Not saying you are wrong but knowing how people are I am sure there is more to the story.
Sorry if I hurt your feelings, I'm just keeping it real.