This time there is a bug in payment, give complaint against payment and ask them to contact me again otherwise users like me access live classes freely.

any portal which is digital can be hacked. as far as I know u are trying to justify yourself. u can hack anything.

Yeah....If there is happening wrong anywhere in this app, I will definitely complaint against them in order that we find solution. I don't know about this payment bug so how can I Complaint?

y all r silent, there is a wrong happening here, don't u have any responsibility ?

Ask them to contact me

who said to you any portal which is digital can be hacked