Cannot contact on Amazon number 912262824444 in panaji, goa

One of the main problems faced for online orders in panaji, goa is that citizens often cannot contact on Amazon number 912262824444 in panaji goa for scheduling their delivery
With an Airtel connection in panaji, goa on 28 May 2019, the domain investor is repeatedly getting the message “the number you have dialed is invalid”
The message may be due to NTRO/raw/cbi blocking or diversion of phone calls
This clearly exposes the lack of rights to some indian citizens like the domain investor, they cannot even use the phone for making outgoing phone calls without a legally valid reason.
Any information on why this message is obtained will be greatly appreciated.