Co-operative housing society maintenance receipt valid or not

I paid our latest maintenance bill of Jan to March 2022 the receipt that was issued was not signed by the authorised person nor society stamp was put on the receipt. On a little argument the Secretary have put the society stamp on it but did not sign. Our society bill is prepared and printed on the society letter head. This bill becomes the receipt as it has a receipt portion below. Can this receipt be considered as a valid document if I present and enclose this receipt with the application to change name on electric bill. Or in any another application where society maintenance receipt is required as a document. Please also let me know Is society stamp and signature of authorised person both required or just society stamp will be enough ?