DOn't worry. It will get confirmed (80% chances) Worst case it will be RAC 1-5 but that also will be taken care by TC on train. No use of going for TATKAL.
Need not to run after him. TC's on this train are good. Realx on your seat for 3-4 hrs, meanwhile, they will inform you in 3-4 hrs (before night). Its their 1st priority to provide you confirmed seat before taking money from others.
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