(1)Where the landlord does no accept any rent and other charges payable tendered by the tenant within the time and the manner referred to in section 15 or refuses or neglects to deliver a receipt referred to therein or where there is a bona fide doubt as to the person or persons to whom the rent and other charges are payable, the tenant may deposit such rent and other,charges payable with the Rent Authority in the prescribed manner:Provided that in cases where there is a bona fide doubt as to the person or persons to whom the rent and other charges are payable, the tenant may remit such rent and other charges payable to the Rent Authority by postal money order.