title: Pubnub: Channel quota exceeded
body: <p>I am using pubnub Java SDK 3.7.2. I use free plan only.
  When I publish bunch of messages without stopping, I often get the following error. But I publish a message every 200-300 milliseconds, the error does not happen. Is there any restriction on an interval of publishing?</p>
  
  <pre><code>[Error: 127-0] : Bad request. Please contact support with error details. : [0,"Channel quota exceeded (2/1000000)","14219273229924875"]
  </code></pre>
  
  <p>Thanks.</p>