Indigo Airlines — Travel certificate

I have asked for travel certificates for 2 of my PNR ::

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Since, it’s been more than 18 months, I have been asked By customer care to pay 400 per passenger at Indigo counter at airport against the dummy PNR generated by Indigo customer Care (CR4LQM; BNQC2F) Post which I will be able to get it on travel certificate link in 20-25 minutes . When I again connected back, it was told that in next 24 hours. Every time I have been told for next 24 hours . Today on 12th Oct at 11 AM, it’s been confirmed that it will be done in next 3 hours . Now it been 6 days . But still have not got the travel certificate . Have already paid 3200 rs . But it’s mental harassment now . Can these guys will be able to provide solution . Every time I have been asked to wait for 30-40 minutes on call
But no solution is coming