I can see all my cards, bank account numbers etc so clearly there has been a data breach.
They don't say when they got access to this data though.
I removed my bank account and cards from mobikwik atleast 1 year back, I don't see it in mobikwik anymore but these details are available in the breach.
So, Either mobikwik has been an asshole and only hid the details from me when I asked them to delete it or this breach happened in ~2019.