No technical support

My outgoing email has not worked since end October 2018.When reported all 3 reference numbers have been written off with no call to me. In fact the last one Telkom sent an sms thanking me for cancelling it. I did not cancel it.It has now gone to the server technicians ref ********** . All the technical support staff have tried to assist but are unable to sort it out. Apparently Telkom is aware of an Office 365 Outkook problem. So why don't they sort it out? My Live mail and Thunderbird also will not send emails. If an email goes it is not on webmail and never gets to its destination. Most times they do not go and I get a server error message. The smtp server is the problem. How many more months must I pay for a service I am not able to use?