Hi anukriti .

In most of the cases, the amount gets deposited back into your account within 24 hours. However, to be safer you can click the transaction summary screenshot and write a mail to the CMAT authorities regarding the same and ask them as to how to proceed further.

If nothing works, you can approach the bank once it opens on Monday and ask them to check for deduction of amount and ask details of where the money is deposited. It could be an error in transaction too.

Do not Panic. You only need to show proofs of deduction of amount if it is not deposited back and everything will be fine.

And you can call to helpline on working hours also,just check it after 24 hours which is the payment status.

Ask me again if any problem