A designated service provider of a customer having slamming protection on their account may not be changed without authorization from the customer to remove the slamming protection. When a customer's telephone company receives a request to change the customer's long distance provider and subsequently determines that the customer has slamming protection on their account, the telephone company notifies the requester that the requested change may not be provisioned due to the slamming protection. The customer's authorization to remove the slamming protection is provided by the requester in the form of an audio file that is reviewed by the telephone company. If the telephone company or an agent of the telephone company listens to the audio file and approves the request, then the customer's slamming protection is removed.