Telkom unable to rectify server challenge where an existing email cannot be detected by their servers.

We have not been able to received emails on our Telkom email address since 13 February. Telkom's services being POP3 and SMTP do not recognition our email address. The matter has been reported, with reference numbers ***2, ***9 and ***0. With the first two reference numbers, Telkom attempted resetting the password and thought that will solve the problem. With ref no ***0, they have been working on since 23 Febr. Part of the back office IT work included once again a resetting of password and then also checking that our anti virus and scans are up to date. We have also attempted their Webmail service - Zimbri. After accessing the webmail it crashes after 5 seconds. No company should take longer than 2 weeks to fix a server problem. We are planning to stop our email account with Telkom, after having the email account with them for more than 15 years during which we never experienced such disgusting service. Error received mostly relate to the below

Task '*** (1) - Sending' reported error (0x800CCC1A) : 'Your server does not support the connection encryption type you have specified. Try changing the encryption method. Contact your mail server administrator or Internet service provider (ISP) for additional assistance.'