Hair damage due to wrong service and products

larueal the salon at madhapur opposite to petrol pump in hyderabad ,
there I went for hair touch up , and they damaged my hair badly when I asked them for some service or treatment they just send me back fooling me ,My hair condition became worst day by day and I consult doctor (dermatologist) and when I asked to refund my amount .
they are not listening at all
They are fooling the people.
Kindly help me