A method for automating changes to a service plan between a mobile subscriber and a wireless service provider is provided. In one embodiment, the method creates a temporary service plan for the subscriber. This method includes: a) receiving a request to create the temporary plan, b) retrieving the subscriber's existing service plan from a subscriber database, c) providing a change selection menu to the user, d) modifying the existing service plan in conjunction with one or more user selections associated with the change selection menu to create the temporary plan, and e) storing the temporary plan in the subscriber database. In another embodiment, the method modifies the subscriber's existing service plan and the modified service plan supercedes the previous service plan. In another aspect, a method for processing a call from a mobile station associated with the subscriber when the temporary service plan is in effect is provided.