no response

I have been in contact with Vodacom for the pasted 3 weeks with regards to my email problem. I can receive emails but I can not send anything out. I have called my provider Mweb and they advised that if I can receive mails the problem is with the server which is under Vodacom. The call centre keeps sending me from pillar to post. A technician was suppose to call me and help as they have before also after I had called for days on end. The ref number for my ticket is ***. The agents keep putting me on hold if they don't hang up. This is frustrating as I am losing a lot of business over this. Can I please get a call back soon