Spice Jet Airlines — no invoice provided by spicejet airlines

Website:

www.spicejet.com

Spicejet did not provide invoice to my pnr# w721wv.in my email request to them to provide the invoice they replied saying gst details were not uploaded and hence invoice cannot be provided. I informed them gst details were indeed uploaded and requested invoice with or without gst details. They again replied and informed they are unable to provide invoice as gst details were not uploaded.

I believe invoice should be provided if gst details are given or not given to a consumer. Since i did not receive the invoice with or without gst details i am writing into this forum. I request your help and advise how can i get the invoice.

Also pls. Share civil aviation consumer grievance contact details so that i can inform them about same.