GoAir — changing the surname of a co-passenger which has been wrongly updated because of auto-correct

Address:

Mumbai City, Maharashtra, 400042

Booked a flight ticket from mumbai to bbsr for myself and my husband where in my husband's surname has been wrongly updated. Go air people asking me to cancel the ticket and book another ticket with almost negligible refund. This is highly unfair. Pnr no. Rcws3h for go-air flight g8-244 on 23rd oct'18. Need help in this case. Go air or the airport authority kindly help as this is a genuine case. We have all the id proofs which can be presented at the time of entry into the airport/collecting boarding pass.