Never expected this bad service from fnb

On 12May 2021 i released my investment with fnb. The employee Jason from the investment department did assist me and transferred the money to the wrong account i confirmed the last 4 didgets of the account 4times where the money should be transferred to and still it was transferred to the wrong account!!! After emails and phone calls to the department they told me, they will do a request to refund it, 7 to 10 businesse days waiting period, 13 business days later and there is no respons! Im deeply upset with the service from fnb