Relaxed professional salon . Rita is amazing, great cut and color I can totally recommend her!

I booked using a Groupon voucher bought for 100 for a 400 keratin hair trearment. Bad move on my part,my hair has been burnt there is no way back from this and they don't answer my emails
I cannot stress high enough how bad experience was..
I arrived was sent to a wash basin, where my hair was washed, as well as the inside of my ear and my left eye, not once but constantly. The water was cold, not pleasant.
The a lot of product was applied to my hair and I was told it needed to stay in for 30min.
Then a hair dryer was waved at my head, to dry the hair. Unfortunately she concentrated on one spot mainly and burnt my scalp in the same spot twice in the process.
The an iron was applied to my hair. There was a lot of smoke. The iron was held it one spot for a good 5-10 sec before being very slowly dragged through my hair . I could feel it tagging on the iron. Then again my scalp got burnt this time by the iron.
This went on for a good 1/2 hour. Just before I was finished another member of staff came over and told me that some cases blonde hair could discolour in the process. I asked why I was not advised of this earlier and she replied ' its in the fine print. What fine print ??
After the ironing was done the same person came over and told me I was finished, I said but I cant be I cant go out looking like this with all the product still in my hair. I was then told I could pay an extra $40 to have my hair washed and another product applied "to close the cuticles" At that stage as I said I had no choice as I could not go out in public as I was, especially out to dinner as I had planned.
They washed my hair, during which I suggested that perhaps it would be good practice to explain the extra costs and possibility of discolouration at the beginning when the client arrived, she replied, "we tried they don't understand us", then dried it off (not a Blow Dry) it was messy felt like straw and had turned a brassy blonde colour.
She then asked"are you happy now?" I replied no, my hair is discoloured and not even dried properly
She proceeded to yell at me saying, a Blow dry isn't included, you should feel lucky, we should have charged you more etc etc
This carried on right until I got onto the lift to leave
End result, My hair was discoloured during the process, it feels like straw its breaking off at the ends, its frizzy and they say the value of this service is400 dollars !! its going to cost me more to try and rectify the situation
Having spoken to other hairdressers since, I believe the staff have not been properly trained in how to apply the product and especially how to use an iron.
I have asked politely to have my colour fixed and was told it would be 80, I wish I had read the other reviews beforehand as it was definately not a positive outcome. And not how a keratin treatment should end up, my hair does not look like I had this treatment done( when done correctly). My hair is now in very bad condition
I approached them several times to rectify the situation to no avail.

Approximate cost: $120