Zeta — zeta mzaaaeal voucher card declined in spite of having a balance

Address:

Mumbai City, Maharashtra, 400050

I have a balance of around rs 2000 on my meal voucher card. However when i tried using it, the transaction declined. When i tried uploading my food bills and claim the amount, it did not proceed. My 2000 is stuck.
I cannollt even edit my profile. The screen goes blank. If the card has been suspended how do i get my rs 2000 back.
Cannot even access the help support on the app

Please help

Regards,
Navin