My candid advice is: make it know to the appropriate authority e.g Police, CID e.t.c., that there was a mistake (silly one for that matter) from the bank you are using, explain everything to them as you have explained it here.
The reason for you to make it known to the authority is because; the bank is not giving you Bank Clearance certificate, the QR 330,000 liability is still connected to you one way or the other.
so, for you not to have problem approach the Police, CID e.t.c or your company lawyer if you have one.