Bad customer service

Still no connection.they send me an email saying I should send them a proof of payment I did that since I've used FNB bank I also send them my payment reference but to my surprise they said I should send the proof from ISP, I ask vumatel via WhatsApp and they have different phone numbers,even if you call them you won't get any help, on WhatsApp they just told me that my Case was escalated to the refund department I ask the lady I was spoke to that is not what I've ask for! she told me to stay on the line she will transfer me to the management team that was Thursday even today nothing has happen and noone bothered to called or explain anything to me.the lady' s name is Sharon.at this stage I just want them to refund me so that I can go look for a better service somewhere else I am really tried of this.i buy data everyday so that I can be able to work but I have paid for WiFi,this people they have bad customer service.i sent them proof that R439 is paid ,the reference number for payment and the account I've paid into.