Myntra.com — Account recovery issue

I already have a Myntra account, but recently I lost my phone. I do remember my registered email id and password associated with Myntra, but they are not letting me log in with it. They are constantly asking for OTP (that is sent to my lost number) I have contacted them several times from past week. But they either ask me to wait or give me solution that fails everytime. Please look into this matter. I have Myntra credits in my account, also I have some prepaid orders that are supposed to deliver in a short while. Please help me