I had 4 Axis cards and wanted an Axis Rupay card, but it wasn't possible to apply for a new card with 4 cards already. So, I emailed the PNO and MD to change the card network of My Zone from LTF VISA to LTF Rupay, but they denied my request.
I registered a complaint with the RBI Banking Ombudsman, and after 3 months, they changed my card network to Rupay LTF.