How did you pay?
I had similar problem and know how devastating it can be.
I tried calling, emailing, visiting salon in person etc etc.
I had paid for a senior stylist and they fobbed me off with a junior (should have twigged when she was so slow).
I knew I wasn’t happy when I left but just wanted to go home.
I hadn’t been to the salon before, not recommended, I went by the reviews on Yell. Only after being in the salon for hours did I realise couple of the reviewers with photos were staff/friends of staff who kept popping in to chat, have hair washed and dried.
The manager offered to redo my hair herself but my hair had been too damaged to work on again and I had absolutely no faith in her or her staff.
The salon was an independent and the owner/manager was very scary. One of those places that makes you feel v intimated unless you are in their circle of people and they were talking about customers in unpleasant way as soon as they left the salon.
Sorry, rambling too much. Long story short, after months of complaining including to Yell, I contacted my credit card company who conducted an investigation and I eventually got my money back.
Also posted fair and accurate reviews wherever I could.
I did get it redone after about a week elsewhere, the staff at the new salon were horrified and took pictures of before and after (including areas that wouldn’t ordinary be showing) which helped enormously with my case.
So sorry you are having to go through this but stick with it and don’t back down until you are happy with the outcome.
Good luck, excuse the pun but I’m ‘rooting for you’.