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.

I don't know why ask me OK ring em dingbat
Idem notte fonda chiamata persa
Missed Call from this number at 22:48 yesterday
this number called me at 3:30 AM , who is this !!
called me at 12:00 one time call.....i suspect they are fraudstars
Number called me at 3:33 PM only one time. Call was Missed