Air India — non refund of flight cancelled by air india

Address:

C 4/3, DLF PHASE I, 122002

1. We were a family of four booked on this flight from diu to mumbai on 06 may. Our pnr was js9r8, (Mrs anjoo kumar, mr sunil kumar, mrs leena rangilal and mrs vimal singh). The total amount charged by ai against this was rs 22, 820 paid through my american express credit card, xxxx xxxx xxxx 32005 on 05 mar 2019.

2. I had contacted ai at diu to obtain full refund against this. I had been assured that the refund would get credited back to my card within six working days.
3. Ai asked me to approach their ecommerce branch. On doing so they informed me that my refund had been processed. However after about six days of this, i found a refund of rs 2020 instead of rs 22820. Further communication with them has had no response as yet.
4. Full refund should be given as the flight was cancelled at the last moment and we had to bear the additional burden of a night's stay and booking on a different airline the next day as no air india flights were available.
5. Request help