Request Declined for Adding Credits of an Indian Film Producer

There are 3 films produced by my late grandfather, B.B. Singh (Producer & Distributor) - not to be confused with B.B. Singh (Indian Director). Films produced by B.B. Singh include Alladin Ka Beta (1955), Patal Pari (1957), and Shera Shamshera (1990) and have pages on iMDB, which can be cross-verified with the Film Banner/Poster available on Google. Despite having his name on the aforementioned film banners, none of the organisations have given B.B. Singh (Film Producer & Distributor) any credit.