Tata Swach — product not delivered

Address:

Mitha pukur, Adi saptagram,, 712121

I purchase a tata swach filter bulb-3000 ltrs on 08.03.19 from tata swach online site. Till now it not delivered. As per their customer care it had been delivered via blue dart courier service, but the tracking id (Docket no: [protected]) provided was wrong, so i can not track the product location also. Every time i'm calling the customer care, they reply that they will call back me latter with sufficient information, but they never call afterwards. Now i want the refund, they not even arrange my refund.