If that's the approach you take, then you're going to have a very crowded contact list very quickly.
Telemarketing calls to cell phones are illegal outright. We're a small business that uses telemarketing (please put the pitchforks down), and I myself have dug through alot of the rules and regulations regarding who we can call.
Cellphones are a sin. Even if you're a business, any telemarketing call that costs the person called money is illegal. It's just as bad as getting a telemarketer calling you collect. DNC has no jurisdiction on cellphones, because it's just outright illegal to telemarket to them.
If I were you, I'd go to the FTC about this. However, if your cell phone is receiving forwarded calls from a landline, that could hurt your case.