Incorrect cellphone delivered

I ordered an upgrade from Vodacom. One or two days later I contacted them to change the phone for another. I said I no longer wanted the Hisense F24 as I wanted the Huawei Y7 2018. The consultant told me they will make the change. A few days later I phoned again to make sure that the change was made. I was told yes or reflects Huawai Y7 2018 for R199 per month. I again phoned a consultant to confirm which phone will be delivered and by when, when I was informed it now shows Hisense F24. But now they the consultant said they are not sure which phone will be delivered to me. With no warning the courier arrives with the wrong phone being the Hisense F24. I did not accept or sign. I then phoned Vodacom and they told me the incorrect phone must first be back in storage and then they will reissue me with the correct phone. I am still waiting. I am seriously reconsidering this network.