RBL Bank — credit application was declined want to know proper reason

Address:

Hyderabad, Andhra Pradesh, 500042

Please note that i applied for rbl credit card and got reference no : #ccs62mwqsk verification done at my office and residence too but today i got msg that we are unable to process i want know the reason y it's declined i never
Did cheque bonus and i have multiple credit card recently i got citi bank creditcard tooo i very disappointed with u expecting the reason soon thank you