RBL Bank — Complaint for the technical issue on their app

I have made a payment of Rs 39, 920/- on 1 at of may 2021 the amount was debited from my icici bank at 9.16 am and rbl bank has not received it because while making the payment there was an timeout on the rbl app, I checked with icici bank, they are saying that the payment has gone through successfully and they also have me transaction id, but rbl bank is saying to wait for 3 working days, after 3 working it's the due date of my, so I shouldn't be charged any late payments because I made the payment on time, it was their app issue