It does annoy me when the programme says we're GIVING AWAY £xx...
If they're giving it away, why does it cost to phone up? It must earn the TV companies significant profits to bother with the competitions.
Since BT and the TV company split the entrance fee 50/50, to "give away" say £5000, the TV company would need at least £10000 of phone calls to even break even. The fact that they continue with these phone-ins day after day, week after week suggests that it is worth their while .
Perhaps a " freedom of information " request could clear up exactly how much profits they make from such competitions.