There is an e-mail being circulated with a phone number to call to register cellphones on the National Do Not Call registry. The email proceeds to say that all cell phone numbers will be made public within a few days, so you need to hurry. That info appears to be bogus.
All phone numbers, land line or cell, can be registered online at www.DoNotCall.gov. It is free. You only have to enter a phone number and an email for authentication. It takes about 30 seconds to complete the entire process. Once registered, your phone number will stay on the “Do Not Call” list for 5 years.
It may take a few months, but once you are on the list those sales calls should disappear to almost nill. In some states you can take a company to court if they telemarket you three times. Automatic judgement in small claims court of $500.