GMS Worldwide Express — not delivering my parcel with consignment number[protected]

Address:	Hyderabad, Telangana, 500088
Website:	gmsworldwide.com

My consignment has reached hyderabad since 19th of aug 2018. On the website, they are showing out for delivery status since 20th of august but they are not delivering my product.
I have been calling them continuously for 3 days. First, these guys dont know how to talk to customers. They are talking very rudely.
Also on enquiring, they are saying same thing that the parcel will be delivered tomorrow. Its the 3rd day i am hearing the same and tomorrow is not coming for them. I have really urgent consignment. It is containing specs for poor eyesight.
Please help on this urgently. I am tired of calling these guys again and again. I even called up the zonal office but everyone is saying that they can't help. Such a poor service by the company.