Vibes Healthcare — overcharging and fraud

Address:

A 14/24, Ground Floor, Golf Course Road, A Block, DLF Phase 1, Sector 28, 122002

I visited vibes gurgaon (Golf course road) and was explained about a treatment for removal of milia on my face. I was informed by dr. Ruchi that i will be given 50% discount for year end march closing. I found the offer lucrative and paid an amount of 15, 000 for removal of 28 milia from my face and neck.
I got the treatment done which gave me satisfactory results. Just to confirm the prices, i visited another vibes clinic and found out that the cost is rs300/ milia (That too negotiable). I was also informed that the rates do not vary across all vibes centres in delhi ncr.
Even if i dont ask for discount, my treatment cost should be rs8400. Your gurgaon location has frauded me for more than rs6600.
On confronting dr. Ruchi about the same, she demeaned me for having poor memory and was extremely rude.
Please give me detailed explanation on how this should be addressed. Because, else, i am very willing to take this to the consumer court for resolution.