Pull down problem

Pull down problem

I have an invoice program where I pull down the customer name and enter a bill.

On the view page the pull down field is displayed is incorrect, it usually shows the correct last name but switches the first name. So for example if I have ted johnson and steve johnson entered for bills, it will show ted johnson twice even though I selected ted and steve not ted twice! Please help. I give you permission to access the app. Use the add bill form beta to enter and the bill view.