A method of interrupting an incoming call on a mobile device includes: intercepting an incoming telephone call received by a mobile device; determining one or more parameters of the intercepted telephone call; determining if the intercepted telephone call matches one or more telephone calls associated with a list of prohibited phone numbers by comparing the determined parameters of the intercepted call with parameters of the one or more telephone calls associated with the list of prohibited phone numbers; and in response to determining a match between the intercepted telephone call and the one or more telephone calls associated with the list of prohibited phone numbers: blocking reception of the intercepted telephone call; identifying a calling party associated with the intercepted telephone call; sending an authentication request to the identified calling party; and interrupting the intercepted telephone call in response to unsuccessful authentication.