Investigation going on forever

The response l received two weeks back was that they will investigate, and thwy have been investigating till now because l received no further communication from them. Instead when l should have received my payout last week, l recwived a message that it could not be done because it failed the bank verification process. Then l was told that the details they have for me are for ABSA bank whereas l bank with FNB. Its puzzling because l checked those details and filled the form with the employer. I was made to fill in new forms all over again with the promise that the payment will be made within 5 working days of which today marks the last day of those 5 working days, l am yet to see if the payment will be made or this time the excuse will be that they have a different name and be made to fill the forms all over again.