Mancosa failed to respond on my emails

Mancosa did not respond on my emails when communicated to them regarding challenges occurred when sending assignment via Mancosa portal and due to that challenge I then sent it via email at pg@mancosa on a due date of assignment.Im doing a project course that requires only assignment to be send and it cost R22000 .Shocking news they are saying regarding proof of emails sent and they are aware that they didn't respond.I must pay for that course and re-register for same course and pay another R22000.Im a healthcare worker trying to upgrade my life and this is how Colleges ******* students money.