Poor support

I am really so ticked off with Webafrica. My client, who is their client is experiencing email failure. He cannot forward or reply to emails anymore. He is a medical specialist so he uses his email exhaustively. With this issue, he now fails to work remotely. I have made x2 45m phone calls to webAfrica and logged x2 email support calls. But there is no interest of assistance from Webafrica. This issue is 100% their fault and now they cannot even sort it out.

He recently started having a issue with his email. He has this issue on his phone and on this PC via Outlook and Thunderbird. I have his mail account setup on my PC on Outlook and Thunderbird. The same error is experienced on x3 devices, x5 mail clients, x2 different OS's and x2 different geographical areas.