My account was also blocked for almost a solid week for no reason and everytime I used my credit card it would say failed and noone could explain why. I called my bank and was informed that they had a system error and even my bank could not explain why there system is so screwed up.
I asked to speak to a manager and was hung up on after holding for 30min.! I finally went through western union on line and within 4 hours my account was cleared. I suggest to keep track of your minutes and calls because they will cut you off before you even know it.