Free Handphone Calls ... but there's a catch

Imagine if you can use your hand phone to make free calls... but there's a catch. You shall agree to receive sms advertisement. All you need to do is to send a request for sms advertisement of a topic of your choice, such as hypermarket, IT or movie. Then you will receive a related sms advertisement with a free talk time. Hence, you can then make free calls because your calls are paid by the advertiser. Any takers? This plan is created by my client who filed a patent for this plan.