Are you desperate enough to spend 6-8 lacs for a card upgrade?really!! May as well write them a cheque for that amount.
I too had a Regalia ltf. Closed one of the cards after HDFC denied upgrade. Have account with them for more than 25 years alongwith other services. Hadn't seen LE or upgrade offer in 10plus years.
As I posted in another thread. LTF Regalia customers were onboarded by HDFC during rbi ban. HDFC gave freebies to keep the 1st rank vs SBI and ICICI.
The ban is gone and so is the use for Regalia ltf users. You either cancel or pay them via spends above 12L. I have even seen Imperia clients being denied. Regalia LTF users are now plain expendables for the bank.
Even reward points are devalued and transfer partners are gone.
Have some self respect and cancel the card. There are other card companies out there which treat you better.