Why did Royal Mail wipe our address from the map?

We were told we weren’t on the electroral roll and were refused creditOur credit history was spotless until 2011 when Royal Mail, for no apparent reason, changed the address of our flat from “Flat 1/1, 2B” to “Flat 1, 2B” in its database. We only found out when, all of a sudden, we were refused credit. Our credit reports started showing we weren’t on the electoral roll (untrue) and had no credit history (also untrue). As a result, TV Licensing started to insis