Trai directs telcos to reverify registered msg templates to check pesky calls, messages
To curb the menace of phone users getting promotional messages from unregistered marketers, the telecom regulator has directed all mobile operators to reverify registered headers and message templates of telemarketers on the distributed ledger technologies (DLT) platform to ensure they are not misused.

Simply left a recorded voice message saying to call 360-780-3803. Never said my name or who was calling. Just said call back this number.