Update - Contacted the operator and they said they can resolve this issue only within 1.5 months The MNP (Mobile Number Portability) rules say that I can't port my number within 3 months from my previous porting. But my current operator, knowing my situation asked me to contact the nearest outlet to enable porting again (to another network) - which would be my only option left as I can't live with this poor signal strength for another month.