Yes I've had a quick look on the forums and you're right, there is loads of people having the same problem! Strange that it's not happening to everyone...
I am with Blyk and have been for about 2 months now and I have not had any of the problems you describe. Could this be due to the area you (and other people having the multiple text problem) live?
Ricky Chotai maybe but i have just moved locations and that problems are still there. Josh do you use their forums loads of people have been similar issues to me on there!