Jet Airways — denied boarding

I am ramakrishnan from coimbatore. Recently i traveled to netherlands to attend an interview and my onward and return journey was booked by the company itself in jet airways. My onward journey was fine and i am happy about the service. For my return journey they have booked a flight from amsterdam to coimbatore via london, mumbai. I have a transit at london heathrow airport. The connecting flight from amsterdam to london is operated by klm. I do have a valid schengen visa. My flight to london heathrow was scheduled by 1.25 from amsterdam. I was denied by authority to board at gate and they asked for uk visa. I was wondering because i myself and my friends have a previous experience of transit via london with a schengen visa. They redirected me to klm transfer desk t4. They checked and they said it's not possible to transit via london and we can't help you. They redirected me to t9 which is emirates desk.. Weird.. The lady at emirates desk was so kind and redirected me to klm at t6. Once again back to klm at t6. They said you don't need an uk visa.. Since you have a valid ticket and schengen visa, you can make a transit.. They rebooked a flight to london by 2. Once again they denied at gate... I came back to t6.. They redirected to jet airways counter at arrival.. Finally after a to and fro to gate and transfer desk, came back with much frustrated moments to jet airways counter.. Finally after a long struggle got my tickets rebooked to next day... As a passenger we would be in much frustrated mindset and it's really worst to see the employees making fun of me and laughing at my situation. I would like to register this as a complaint and hopefully i can get a prompt reply from you.