Home loans split payments

My wife and I we have a bond that is funded by fnb last year we decided that the bank should debit 25% from her account and debit 75% from my account and it was possible, this year we decided that the bank should debit 50% from my account and 50% from my wife account, the consultant from fnb sent us forms last week to fill them and email from last week I've been transferred from one person to another only to be told today that they're no longer going split payment on bond, I felt that we were not treated fairly because first of all if split payment was cancelled then forms were not supposed to be available to clients and It can't be that all consultants who helped me didn't know that there is no more split payment lastly a bank should notified us as clients when they took such decision because we I took a loan with solit payment in mind, now I would be in shortage of R2000 because of them not being transparent when they change rules