Myntra.com — 1 piece of sandal was missing

I have ordered sandals from myntra and i received partial delivery on 1st Dec where 1 piece of sandal was missing and i have raised the request.

I was informed that my issue will be look after before 4th December. But today is 9th December and no call has been received and issue is not yet resolved.

I am making calls every 24hrs And they are giving excuse to wait for more 24 hrs. But no proper response.