My Sony Ericsson w595 won't send texts to one of my contacts that I text frequently, ive tried the sim card in a different phone and it still won't send texts. I went to meteor and got a new sim card and they still won't work, they work for about 5 minutes then I have to forward them a load of times and they still won't send. There's nothing wrong with the person who I texts phone as it works if everyone else texts him, how do I fix my phone?? Please help