HDFC Bank — Not able to avail HDFC Credit Card

I am trying to avail a credit card for mysel[censored]sing the HDFC Credit Card portal. However trying to do so triggers an error on screen saying, "Your request could not be processed. Please try again to continue."
Please note that I don't have an HDFC Account active, I tried to get an account but it says that I am already registered and have to visit a nearby branch to activate/link my account.
I am actually facing issues in both the above cases I'll have to visit the branch but unfortunately I am not able to find time due to work. Hopefully this can resolved online without much hassle.