Surjit Singh vs Mahanagar Telephone Nigam Ltd

The Supreme Court held that under Rule 443 of the Indian Telegraph Rules, a subscriber's telephone lines cannot be disconnected due to non-payment of dues associated with another line registered in a different name. The Court emphasized that the appellant and his wife are separate legal entities, and thus, the disconnection of the appellant's lines for his wife's dues was improper. The appeal was allowed, reversing the Delhi High Court's decision and reinstating the disconnected lines.