For this time, your new work permit is approved and valid until 16th Nov 2014 (the date is related to your last stamp in the passport)
You, therefore, should go to Rayong Labor Department earlier than 13th Nov for collecting the permit as we need a time (at least 1 week) for the process of extension and it should be done before the invalid date (16th Nov). I hope that this process could be completed before our outing day on 20th – 21th Nov.
And please let us know your new stamp on password (the new valid date which you’re allowed to stay in Thailand for this time). This date will relate to the 2nd approval for your work permit kha.
Your prompt reply would be highly appreciated kha.