For businesses who want to make sure their business calls are not inadvertently blocked, we encourage the use of the free website https://calltransparency.com/, which will allow businesses to register their business number(s) and name, so their calls to customers are recognized as legitimate. (Businesses should also register their number on https://freecallerregistry.com, which may be used by additional carriers or analytics providers.) T-Mobile customers can use the free website https://callreporting.t-mobile.com/ to report calls that were improperly identified or blocked. T-Mobile Customers can disable Scam Block at any time. Businesses or T-Mobile customers can also call T-Mobile at 1-800-937-8997 for assistance.