I was going to suggest going with a phone plan rather than prepaid as you get itemised billing and then are able to ban certain numbers on the phone, but then you have the worries of how much they spend. Can't win either way you look at it.

I think the real solution lies in parents actually giving a damn about their kids and educating them of the risks their behaviours have. too many parents are letting their teens 'live independantly, but dependantly'and they have no idea who their kids really are. Parents and teens are co-habitating, but they are still complete strangers at the same time.

Our girls will be raised that it is a privilege to have a phone, not a right. They abuse it, they lose it. seems fair considering more than likely, I'll be the one paying for it any way. They will also be warned of what could potentially happen too, as that is my responsibility.,