If you do not wish to be contacted by companies and receive advertisements from them, you can send DNC to 78772 for all 3 registers (no text message, no voice and no fax).
If you are relying on these three channels to get customers, how are you going to be affected?
If you are only using one of these channels to get customers, how much greater are you going to be affected?
If your business is providing marketing services using these three channels to reach customers, what are you going to do?
If your business is providing marketing services using only one of these channels to reach customers, what else can you do?