DISCOVERY UNABLE TO ALLOCATE A PAYMENT AFTER FNB CONFIRMED HAVING RECEIVED THE FUNDS

I am struggling for Discovery Health to allocate a payment I made to one of the Debt Administrators. FNB which is their bank confirmed having located the payment and that I should liaise with them. I checked my online profile payment still shows outstanding I am not hearing anything from them after numerous emails. This is stressing me as the banking details belong to the group and they should internally allocate it.