What do you mean by manipulated?? Every team knows what their record is and so how can they do that without anyone noticing or questioning it?? I made a request one week that there was an error with the standings and they miscalculated (a human error/honest mistake) and changed the standings to be proper (they keep records of the scoresheets).
As for the refs, it is a fast paced game and the refs like any sport will make mistakes. I doubt you "questioned a call" as i have seen calls been over-turned.