Jet Airways — Misinformation - Passing the blame

Air Reference - AVRPJC
I am truly disappointed. I flew with Jet on the 29th Oct, London to Bangkok via Mumbai. The price of the ticket wasn’t anything special. THE FLIGHT WAS DIRTY AND STAFF WAS RUDE.
I was planning to stay in Thailand for 4 months then return to India for a month before coming back to the UK.
However, plans changed and i had to come back to the UK in 3 weeks of my stay, my father tried to ring the London jet office explaining the situation and asking to change the flight earlier.
We understood there would be a charge to change the flight. However, the office/call centre said it will be £350 to change the date of the flight.
Therefore, as it was a emergency i didn’t argue i bought a new flight via Air India which I must say excellent service. Which was £280, they were there in a time of need. I change my tickets within 12 hours of my flight and they were happy to help and let me fly a few days later. Which i returned to the UK on 15th Nov 2013.
As i returned to the UK, decided to visit the Hammersmith head office for Jet. I explained the situation; they said there is nothing that can be done. Speak to your agent. Spoke to the agent speak to Jet. It was passing the blame from here and there. This was on the 17th Nov 2013. Kavita at Hammersmith, London said she would call me back. No response.
After a lot of calls, they said that the information given to your father was wrong; it only cost about £50 to change the flight. We are not sure why they said £350. But that doesn’t make it right; I am still out of pocket of £280. So who is going to give me a compensation for this mistake?

Now 27th Nov 2013, i decided to write a email to guest relation as advised by the call centre. I got a response on the 17th Dec, when they said they will reply by 6th Dec. Seriously, what kind of service is this? Nalini d’Penha, sent me a reply, sorry for this speak to your agent hope you fly with jet again!!
Was she serious?
I sent her a reply, and today it is 30th Dec, no response. I spoke to the call centre yesterday again and the same responses please email the guest relations. Also sorry forgot to add, they said why you don’t buy a new ticket to Bangkok and have a holiday. Who is going to pay for this? Even if i decide to fly to India for a small holiday, they said i will still have to cancel my ticket Bangkok- Mumbai to use Mumbai – London which will cost £100.
This is outrageous. Honestly.
• This is what i expect to happen, full compensation for mis-information.
• Someone senior to respond to my emails and give me a answer.

Kind regards

Payal malde
Air Reference - AVRPJC