Incorrect payment

I paid my beneficiary that has a Tyme bank account however my beneficiary did not receive their payment and TymeBank tells me that the branch code was changed to capitec, my question is by whom and how because this person has a TymeBank account their payments is immediate, and I cannot change beneficiary branch codes in the app I’m so frustrated because now what am I supposed to do and when I called I was told a case will be logged I still have not received the sms with the case and if their system has a glitch why is it my fault I’m so distraught