Very unhappy new client

I took up a deal over the phone for one Hauwei and one Samsung phone with a R1000 Homemark voucher for R300 and odd a month. I received the phones on the 30 th of May, but both were Hauwei phones and no Homemark voucher... To put the cherry on the cake, on the 9th of June, I received an invoice for one Samsung and one Hauwei phone and also a statement that I owe them R949 at the end of this month. I have since emailed customer care to no avail... I need answers as if this is how you treat a new customer to Vodacom, I think you need to collect your handsets!!!!