Hyundai — cheated by blue hyundai bangalore

Address:

Bangalore, 560057

Hi i have hyundai i20, i have been using last 5 years, last time there was a clutch issue, i have taken to blue hyundai an authorized dealer of hyundai.
They are suppose to change the clutch master cylinder & sleev cylinder, but they have changed clutch kit, which cost me 15k, extra.

Now without my mistake i have paid the extra amount.. I suggest no one should go the work shop, they are sitting to cheat the customer.