Faulty handsets

<p>I did an upgrade on vodacom and received a Huawei P 8 light. On 16 /10/2016 after 3 weeks of using it I send it in ( Job no. ********** 4).I receved a replacement unit. Then on 31/10/2016 the new phone went in again ( Jon no. ********** 2) received a replacement unit. 20/11/16 it went in again ( Job no, ********** 1). Received a replacement unit. Now they want to give me a P 8 light again.! Why must I keep on receiving faulty handsets. My contract with Vodacom does not stippulate that I will be receiving faulty handsets for the rest of my contract. 4 years ago I also went through the same problem twice !2 diffrent contracts. 5 repairs before they gave me a diffrent make of phone. My inconveniance to drive 30 km to drop off and then to collect again. Then almost 2 gigg of updates on my cost to get my new phone to a point that I can use it.</p> <p> </p>