Poor customer service from Huawei

Huawei P8 lite has a manufacturing fault with connecting to Wi-Fi. I know it's an old model but out of 24months the handset only connected for 8 months. It was sent back to manufacturer after 4 months and repaired and then the same problem recurred after a few months. Due to long term illness I was unable to return to Cell C and when I went to see them November 2017 they said the phone was out of warranty cos although you pay for 24 months it's only guaranteed for 12 months. They quoted R2500 to repair it!!! I have spoken to four different people at Huawei contact center since January 2018 all promising me they would get back to me. Not one has. I feel properly ********** with this purchase as it seems obvious that there is a manufacturing error with the device. Huawei you made a promise you did not keep and your customer service leaves a lot to be desired. I have all the relevant reference numbers and names of calls made and logged with your 'Service Centre' and just wish that I as a customer could receive a little bit of the service you promise!