Outlook and on Do Messaging it states my password or login code is wrong.

PLEASE ASSIST EMAIL problem since Friday it do not want to accept my password on Outlook and on Do Messaging it states my password or login code is wrong. After a spending hours to try and get hold of Telkom I had to beg the consultant to log a fault as she was insisting my fault is due to the server problem. I received a SMS this morning "case no resolved.IT IS NOT! I have 5 email addresses with Telkom 4 is working (not that fine I must say) but they are working. My personal email is not working at all. How do I get Telkom to sort this out as I have spent hours on the phone to get hold of them. This is day 4 without a working business email.