Talaaq via sms

I am a Palestinian Muslim living in Norway. I have a problem. I sent my wife an sms message to divorce her. The message clearly says that I divorced her. Is an sms message considered a valid method for divorce, exactly as divorcing her face-to-face? I now regret sending her this message, is there any hope for returning to her as I desire now. (By the way, I divorced my wife 2 times before face-to-face but this third time was via sms message.) I did this because she ignored me and refused to answer my phone calls or reply to my sms messages, and therefore I wanted to avenge her.