I don't understand hdfc

So I got freedom cc from HDFC ( with a limit of 25k)🥲 I am salaried for the last 6 months I have a take home salary of 75k/month I visited HDFC branch Bangalore for limit enhancement. They submitted my request to the top office with my payslips etc. The branch RM was 100% sure it'll be upgraded based on my salary, plus he said he'll upgrade me to millennia. But still I got rejected for limit enhancement. Why is this happening