PhonePe — cashback pending since 48 days

Website:

ttps://www.phonepe.com

I have done 2 electricity bill payments on phonepe app under offer to get 100 rupees cashback for firs 3 bill payments on 4 october 2017.
They promised me that i will receive the cashback within 24 hours. But when i didn't received the cashback till 8th october didn't recieved it. So i tried to contact them but i was not able to do so. Then i tweeted them and they made fake promises that technical issues etc etc... So i asked for a certain time limit first they refused but then they said that i will receive my cashback till 11/10/17.
After multiple times they gave me 50% of cashback for my 2nd payment
But they still have to give me 150 rupees cashback.
Now it's 22nd november and still i have not received my cashback.

I don't know why these companies make such fake promises if they can't fulfill it.

My transaction id's are:
1st) nx[protected]
2nd) nx[protected]

Please provide me my cashback as soon as possible.