Indigo Airlines — Need refund of rs 1600

Address: 500082

My mother travelled in indigo, 6e-845 hyderabad - delhi on 13th november.

Pnr-qe88ka

Shes a senior citizen. She had two bags with her.

One weighing 12 kg, other weighing 11 kg.

She was charged rs 1600 and the receipt was not given.

This is not the way to harass senior people.

Can indigo look into it and see that she gets her rs 1600 back?

Hoping for a response.