Phone repair that takes 11 weeks = 3 months and counting....

I purchased a Hisense mobile device on 16 January 2017. In July the phone stopped charging and i sent it back to the store for repairs since it was still under warranty. I was informed that the phone was going to be returned on the 25th August, which it was. I received a call from the store saying my phone was ready. However it wasn't. When i tried to charge the phone it was still not charging. I took i back to the store and told them of this problem.

on the 4th October i called the store to follow since i had not hard from them since 25 August 2017. They said they were "following up" and this is 6 weeks later. Only yesterday after making several calls i learnt that the phone was never sent for repairs the second time around and again i am expected to wait while the matter is "escalated". For 6 weeks, Markham has been "following up" on getting the phone sent for repairs??? And in all these 11 weeks of waiting, i have been doing the probing, no one has called me to explain why i still don't have my phone with me and i am expected to be paying for this.....