Evo if you want to get your own back on the idiot who set you up on the call, put an advert in a free paper like loot for something really cheap or for a call girl service etc. Maybe set his number up as a gay contact in the loot, he will never know it was you and just imagine all the guys ringing him up for a bit of action, it will drive him mad

. Ive done this is the past after a builder gave me a load of grief, in the end he asked for a truce as he could not change his number or he may lose a load of work, he never threatened me after that.