GoAir — fraudulent cancellation charges

This go air airlines.. Is actually doin a complete fraud by cheatin customers without even mentionin proper guidelines regarding cancellation fee.. I booked a ticekt for 3590 which is apparently a refundable ticket.. They didn't evn mention in terms and conditions how much will be the refundable amount.. Now they are sayin my refundable amount is just 390rs.. Then what is point of mentioning a ticket as "refundable" when they are giving just 10% of refundable amount.. This airlines is charging abruptly huge amounts as cancellation fee. Without even mentioning about this in their "terms and conditions"... I really want this company to look into this issue and solve mt grievance