no response

Good Day on the 24/08/2022 I sed through a email attached a invoice from the tutor to your trustfund department. No reply then I know it takes 5 days. Still nothing on 01/09/2022 send a email for follow up no response as the payment was to be made to the tutor by the 1st. Then today 05/09/2022 i send again a email nothing. Last month was advised every month must send through this invoice so that the amount can be paid. So my niece has not gone for classes this month as we can't pay for it. Can I please get response to what is happening cause I now have to stop her tutoring for now.