How do I refund individual citizen utilities deposits (AP) without creating a new vendor record for

The city collects citizen utility billing deposits outside of Oracle Applications. The cash is sent directly to General Ledger, there is nothing received in AR. We are looking for a quick way to refund these deposits to out citizens without creating a new vendor record for each of them before refunding their deposit money. We know how to import the data using the api and also how to create new vendors using the needed api, but just want to be able to use an 'umbrella' vendor for these refunds. AP states they were able to do this in 11i, but