Xiaomi India — Poor service 2

Address:

700016

I have given my phone for repairing at the service centre in kolkata on 8th july 2016 at park street centre, kolkata and i was promised to the delivery date of 21/07/2016. After many telephonic calls and several emails i haven't got my handset till 01/08/2016. The handset is not repaired due to unavailability of spare part and also they are unable to tell the revised date also.

The service is really bad and highly dissatisfactory.
Kindly help.
Regards
Vivek mahansaria
[protected]
Email: [protected]@camac. In