Issue with receiving/sending SMSes not being solved

Vodacom South Africa - I am very close to changing over to another service provider not even 1 week after I ported my number to you. Nobody can help me to receive / send SMSes on my phone since I did my sim swop on 13 November. People are sending me from pillar to post. Most appalling service at Vodacom in Cresta Shopping Centre and customer service agents not trained at all to solve the problem. Today my calls to customer service center keep on dropping. Apparently my issue has been escalated to a senior technician on Friday - again no feedback and problem still exists. I know that nobody in the world really uses SMS anymore, but surely it should be a service working on my phone. This issue is really inconveniencing me as I am not able to do any banking.