I was been cancelled before then recently came back to Doha. After I inquired with my previous bank, they gave me the same bank account as my previous one. Same thing with Q-tel, I applied for new connection and still they asked me to pay my outstanding bill which is under my ID number (I did not pay before my arrears since it is just less than 300 QR). Therefore, they will not cancel your account even if your work visa is cancelled.