Lenovo — worst product and worst service

Address:	Jamnagar, Gujarat, 361006
Website:	www.lenovo.com

I had purchased lenovo k6 note 3gb from a local store in jamnagar, gujarat on 23rd of february 2017.
I had a problem of shaking of screen inside (A touchpad problem). So i had gone to service centre in jamnagar and gave my lenovo k6 note for repairing on 1st of july 2017, and they said that it will be repaired by 8 to 10 days.
I had called (On phone) the service centre on the 9th day to ask about my lenovo k6 phone, the reply was no (We have orderd the parts which are needed for the phone and will take still 4 days more). Then after 4 days i again called to inquire about my phone, still they said that the parts hasn't came, it would still take 3 days extra. And now today i today morning i called them the number was switched off and now at evening i called them again they still said the parts haven't came yet still it would take 3 days more and again they have switched off their number.
Now what to do? Today is 17th day i am without my smartphone.
Really i am fed up with this all.