Hindustan Petroleum Corporation [HPCL] — I'm complaining about the purity of the fuel

Hi my name is geogu jose, resident from bangalore and a regular customer of hp. I was traveling from kerala to bangalore and i filled my volkswagen vento deisel for 1000 rupees from krishna fuels alathur, pazhayannur road, kerala 678541, an outlet of hp. After few hours of travel we experienced a jerking and pulled by. After contacting the service centre we realized it was an engine malfunction. We managed to reach the nearest volkswagen service center. After the diagnosis we were told that one of the fuel injectors were failed due to contaminated diesel (Either kerosene or water mixed along with deisel). Rectification of this cost us 25 thousand rupees. This lost our faith in hp. Please do look into this issue. Malfunctions like this will effect your reputation. Please give us a reponse as soon as possible. Or we would go legally.
Thank you.