As we know Pesco/Iesco/Lesco/Mepco/Fesco etc etc, are worked under the umbrella of WAPDA, now come to the point, in LESCO thread a member post saying"he received appointment letter" you may also confirm it from visiting the said thread. so if LESCO issue appointment letter then why not Pesco issue letter to successful candidates for appointment and interview letter for staff grade position.
One thing more it it possible that, the process of cancellation and appointment can run simultaneously.?