Coolpad — mobile not repaired even after two month at service centre

I purchased a coolpad note 4 product royal gold in january 2017, phone started a problem "linings in phone screen" and "no display". I submitted it to the nearest service centre, i. E. 102, city centre, sansar chandra road in the first week of november and after 10 days i got it repaired but same problem was started again after 15 days and i submitted it to the same service centre on 30/11/2017 but till date they are saying part waiting. Kindly help me. Service job no.-js[protected] dated 30.11.17, serial no - [protected]. Even i have talked to customer care also but not get a satisfied answer.
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Regards

Manoj sharma
(M) [protected]...