Sent wrong phone and not replaced it

After ordering a Cat B15Q Dual Sim Vodacom sent a Single Sim version. Since 12 Jan I have been calling, emailing and posting on their Facebook wall.<br> After initial promises to send the correct phone, it degenerated to telling me that there is no Dual Sim version (not true), and that the Sales team will be in touch which they never have. Each time I log a complaint I get an email telling me it will be attended to, but when I query the reference number they tell me that the Reference number is closed.<br> How can a Reference number be closed if the problem still persists.<br> It seems that either Vodacom dont care, or that they are incapable of fixing their mistakes BUT they continue to take my money.