Blue Dart Express — Parcel not received since 10 days

My waybill no is - [protected]. I have ordered my mi mobile on 29. July. The item is shipped at 31/07/2020. Why is blue dart careless about the delivery of the product. Why does you don't reply to customer mails? The parcel is shipped from kolkata. It has been 7 days i have not received the product. And why is the tracking information not there in your website? I think you must close blue dart. Other couriers are far better than blue dart. Disgusting. I want my mobile soon as i spent the money not you.. Take immediate action. Why is blue dart providing customer care phone number if they cannot be dialled. And why you take orders if you cannot shipped at the promised date. Why you do not reply to mails??