Error in Getting User Info -- 1/users/show.json?include_entities=true&user_id=********


I was querying to get the users info on the url mentioned in the title. Initially i was getting the data and first time i crossed the 350 limit on the authenticated user.
From then on i took care of the hourly limit.

But Now I am getting this error, so can someone explain me what does User has been suspended mean, and is there any day limit on the number of requests

403:The request is understood, but it has been refused. An accompanying error message will explain why. This code is used when requests are being denied due to update limits (
error - User has been suspended
request - /1/users/show.json?include_entities=true&user_id=276846900