Money Transferred into Westbank Personal Account instead of Homeloan Account

Tonight I tried to make a transfer from my Cheque Account into my Homeloan account, everything seemed okay and the app was showing that the transfer was going into the correct account, but afterwards when the confirmation came through it showed that the money went into my Wesbank Personal Loan account. The app has been malfunctioning and currently says service is unavailable, i've called your customer care but they say that there is nothing they can do for me. My Homeloan payment is due in 3 days and the money went into the wrong account, please help since it's within the same bank.