An individual resigned from CRPF training after securing another job but missed the second opportunity due to document delays. They are inquiring about the possibility of rejoining the CRPF, having resigned two months prior and awaiting a response from the department. While withdrawing a resignation is possible before acceptance, rejoining after formal acceptance and relief is generally not permitted in government service. The individual is advised to keep all correspondence secure as a fallback should their cancellation request be denied.