IDFC Bank — idfc instacred cardless emi is not working

Address:

781008

I have purchased amazon vouchers worths rs 50000 from idfc instacred.
It was told that i will receive them in 3 working days but i haven't still received them
I was hoping you could look into it
They have already planned the emi tenure.
It is of 12 months.
There is also no way of cancellation
There are also so many complaints about the same
I have call idfc customer service center and i told my problems but service center not solve my problem. Very bad service.