Online Purchase Disaster!!!!

I am still in shock by the level of disservice I have received from Vodacom. Online misrepresentation, passing responsibility, failing to provide my refund and consultants- (purportedly the Head of the Department- Sales, by the name of Thobani Maphonsi) shouting at me. I ordered a phone online for R250 phone with R200 airtime, instead I got a R250 deal with R150 airtime. When I wanted to correct this, they requested I send back the device, to get refund and obtain the correct order. I was told that this will no longer be the case by the most rudest consultant ever! I have been calling day in and day out at Vodacom. I am shocked by the level of incompetence and lack of responsibility.