In the case of an unjust suspension (or at least what a user considers an unjust suspension), it seems that better way than to bring this up on meta would be [contact the SE team](http://mathoverflow.net/contact).

See, for example,  an answer to the meta.SO question: http://meta.stackoverflow.com/questions/165359/where-i-can-complain-about-an-unfair-account-suspension/165360#165360. This solution was also suggested to you in a [similar discussion on meta.MSE](http://meta.math.stackexchange.com/questions/11158/having-been-flagged-many-times-can-be-a-reason-for-the-suspension#comment42293_11160).