Dissatisfied Vodacom customer

I've been having difficulty sending emails from my Vodamail for the past few days. I phoned the Vodacom customer helpline and waited for 30 minutes before an operator answered the phone. Then, spent almost 20 minutes over the phone with the operator where he was unable to solve the difficulty and recommended I go into a branch. I went to the Cresta Vodashop - another waist of time. Spent another 40 minutes there and then the assistant said that there has been a problem with Vodacom's outgoing e-mails for the past 10 days. He couldn't assist in fixing the problem. I then asked assistance to set the settings that my emails are able to send from a public wifi and not only Vodacom. He searched the internet for solutions, but was again not able to assist. This is the third time that I encountered Vodacom and Vodacom Cresta specifically, unable to assist.