Help Assign silenced ring to specific number help

[Bcrow88]

Hey everyone...my mother purchased an lg Optimus net today and she is a real estate agent and there are sales numbers and other certain numbers she doesn't want to answer. I've found how to assign a certain ringtone to a certain contact...but is there a way to assign a silenced ringtone to a certain number? Not to be repetitive but have it set so if I call her it rings but if a sales number calls its silenced. Any help is appreciated

 

[akashash5]

add that no. to contacts and place a empty ringtone in sdcard/media/ringtones/ and assign it to the contact in options-custom ringtone or try using call barring