Motorola — Given moto x2 (2014) for repairing in authorized service centre but parts unavailable

Address:	Kolkata, West Bengal, 700037
Website:	Motorola

Its been almost one month that I gave my Moto X2 phone ins authorized service centre in Lake town, Kolkata, West Bengal, India. But even after lapse of more than a month they are not able to repair my mobile and the reason they are giving is Unavailability of parts . I can't bear how can this be possible! Please take immediate action and kindly resolve the matter.if required I would provide IEMI NO. OF MY PHONE AND OTHER DETAILS.