Lost my money to Capitec bank without any explanation

I have a capitec savings account and on the 9th of January i have send myself 1200rand cash send voucher, went to silver oaks capitec ATM to redeem the voucher, to my surprise the ATM did not dispense the money an i waited for some time on the ATM even call capitec emergency line, i waited for about an hour just to make sure that no body tempered with the ATM. Call was logged with capitec will ref number ***,ever since i have not received any feedback from capitec, last week after 4 weeks of incident i went to capitec branch to inquire they could not even trace the ref number and they promise that they revert back until today when i call via my app and i was told that call log was closes and rejected. I am very angry as i was ****med my money by the very same bank that i trust with all my finances. I will definatly close my account and not look back