I am an existing HDFC savings bank account holder. I applied for Tata neu plus on 20 April and got the card on 26 April as FYF. I mailed to hdfc credit card service escalation.cc@hdfcbank.com several times ( 4 to 5 times or even more) to make my card LTF. Finally I got a call on 8 May followed by an email that my credit card has been converted to LTF.