ICICI Bank — processing fee refund

I have applied for education loan with ICICI Bank, but they dint informed processing fee is non-refundable after paying the fee when we received the sanction letter only there was a update that its non-refundable,
Unfortunately, our visa got rejected when I approached for refund they denied.
I approached RBI bank and they helped to get only 25K out of 88k which paid.
Their service also poor (no proper response ) which took 1 month to get a sanction letter . ( I have shared all the mails which I was following and also excel with sequence which happened)
If they would inform processing fee is Non-refundable, I would reach Government bank as my profile was strong.
Need help in getting another 50k.
My Application No - APPL00238472