herman and richard

I bought the whole lot on dvd just recently and I've just finished watching episode 6 of series one. I'm enjoying watching the series, but was disappointed to hear Himmler in the one about the suicide of Hitler referred to as HERMAN Himmler and Heydrich in the one on Kristallnacht as RICHARD Heydrich. I know for sure that the very notorious Nazi big shot 'Herman' Himmler mentioned several times in the program was Heinrich Himmer and I'm pretty sure that the 'Richard' Heydrich mentioned once in the program was, in fact, the notorious Nazi big shot Heinrich Himmler. How on earth could the makers of such a well made documentary series make such ridiculous mistakes? It's not that I'm a fan of the two Nazis in question, - indeed, I'm no fan of any of the Nazis - it's just that in my opinion, a documentary should get the names right. Makes me wonder how many other things they got wrong in the series.