School want me to pay twice for school fees

I am a parent at Teneo Online Education with 2 children. To pay our monthly school fees they send a link to the email and we follow it to make payment. I have made payment for January and February without no problems. For March school fees I have done the same and to my surprise Teneo Education says I did not make payment for March school fees. I lodge 2 tickets on their online portal (#*** and #***) attaching my bank statement indicating that my payment went through. The school did not reply. This now will affect my children learning as they might be suspended. I cannot afford to pay school fees twice for the amount of R7 570. And also what does it mean to a parent for the following month if it will not happen again. I have decided to write this review to warn other parents and other potential parents about Teneo online school. The biggest problem of Teneo online school is that there is no human interface. You cannot call them or speak to someone there. This problem could have been solve long time by speaking to someone.