Vumatel *****ing people’s money and sitting on the interest

I have received the worst possible service from Vumatel. They advertise through Afrihost a 7 day installation on fibre in my area. Tamboerskloof. They let me select my block and confirm this. They then ask your for upfront payment. My order was placed on the 14 August and today’s date is the 10 September. They are refusing to refund me and have on 7 occasions over a 10 day period not gotten back to me. I really don’t know what to do anymore