restricted account

scottrade restricted my accounts today because they said they were trying to call me and the phone number didn't work...does that make sense to anyone? what were they planning on doing with the money since they were not letting me get to my own account---is that the policy..if a phone number changes they cut you off--the worse part is I had been in their offices and given them the new info 3 times this year..... what a pain= o need to switch to anyone else.