Consumer Redressal

I had asked for a refund on seat reservation made by me on my flight NYC-MUN-MUM, which were not honoured by Lufthansa.The first reply from Lufthansa dtd.23-05-2015, sent my Ms. Kavita Shahi,Lufthansa service Team clearly stated that they acknowledge their mistake and I would be given a full refund within 25-30 days.As I got no refund till 25th June,I wrote to them on 26th June and still no refund and no reply.After I posted on Lufthansa Facebook page, I got a reply from Lufthansa which is bizarre. I was told that out the eight seat reservations (4 on each of the two flights), only 5 were eligible for refund. This was because I was allotted equivalent seats (aisle for aisle seats).So does it mean that if I had not reserved specific seats, I wouldn't have been assigned any seats?This email I received 04-07-2015 was from Ms.Swati Vashist.It means that no action was taken on the initial claim. I would like to know if I have a cause of action in the matter.