Failed to deliver the correct product that was ordered

On the 25th of Nov 2017, i have placed an order for a black Friday special which included double data 20gigs & a plug & play modem. The product was delivered 2 weeks later but the package included an Huawei P10 lite. I have contacted the telkom sales department since then, approximately 15 to 20 times and i have been told the matter will be rectified & each time i am given a new excuse as to why the matter is not resolved yet.