SME MTN Business Service, POOR!!

Hi, I'm extremely disappointed with the service from your SME MTN Business department. I have a business account with you guys. I have an upgrade that was supposed to be completed. I cannot get a hold of anyone from the Sales team and am extremely frustrated. I'm on hold for more than 20 minutes at a time. This is not acceptable. I send emails and no one responds. Please can I get someone to contact me urgently regarding the status of the application.