We genuinely regret that you're dealing with these types of harassing calls. These are spoofed calls, a tactic tricky spammers use to change their numbers, displaying any sequence they choose.
While it's a challenge for any service to pin down and block these ever-changing spoofed numbers, at Robokiller, we're committed to doing our best. For instance, we've set up a feature that blocks calls resembling the first 5 to 6 digits of your number. It's one of our ways to counter these sneaky calls!
And remember, if the bothersome calls don't match your area code and the subsequent 2 to 3 digits, you can block them manually. Simply add the troublesome area code plus the next 2 digits to your Robokiller block list through the Blocked and safe filters feature under the Settings tab in the app.
Still need help? Please email us at firstname.lastname@example.org.