In February, cell phone numbers will be released to telemarketing companies. You might start to receive calls AND you will be charged for the calls.
To prevent this, call the following number FROM YOUR CELL PHONE: 888-382-1222. This is the National Do Not Call list. It will block your numbers for five years. Remember, you must call from the cell phone that you wish to have blocked.
I just did this and it doesn't take too long.
I think it is well worth it!