Unknown — vulgar talk from unknown no

Address:

Thane, Maharashtra, 421301

[protected] a person is continuously calling from this no and taking vulgar. Me and my husband told him that we will complaint about him to police station but he still calls.
If somebody can stop such kind of ill minded people pls do the needful.
I have left only way to get out of this by filling police complaint.
If anybody knows others way to stop such creepy people pls suggest.