Okay, it looks like IDFC is really mad at me.
I had IDFC Select with 3.5 lakh limit for over 2 years. No spend based offers, no limit enhancements, no card upgrades. So I finally closed it last month. Retention team was not helpful.
After the cards vanished from my netbanking, I applied on the website using c2c method - used HDFC Regalia with 6.2 lakh limit and used a new mobile number.
Guess what they offered - IDFC Select with 2 lakh limit. I have Wealth savings account btw. I did not proceed.
I will re-apply after 6 months.