I have removed this post for 3 reasons.
One it is not clear as to whether or not you are selling stalking. If so you need to pay for trade membership.
Two as has been pointed out putting your mobile number on an open forum is not the way to advertise
Three you mention you may be interested in swapping stalking, if so you need to make this very clear.
Perhaps you may like to PM me and let me know exactly what you are wanting or offering!