Nokia India — useless service

My phone charigng port got damaged and i've givrn it for repair.
They promosed to give on 30th apri. But they havn't given it till today and they keep saying next day.

I contacted nokia customer care several times, but no use. They are also keep saying i will get status within 48 hours, but already one week over and i didnt get any call till now. They are not even taking responsibility of anything and they are not even ready to escalate my issue.

I've been using mobiles for past 13 years and first time i became phone less just because i purchaded nokia