I believe among dealers, HK's service has to rank as the worst service of any gun manufacturer. I have a friend who is a dealer and every time I see him, I believe he has a new story on how HK has screwed him over again. He would of given up selling them a long time ago, but they sell well for him since most all the other dealers in this area don't have the patience to deal with HK.
One example was where he ordered a few guns and at the time were told they were in stock. Well come to find out, they were out, but he had already sent in his money order. So he calls up HK and they tell him they will refund him his cash. Well, long story short, it took over a year, after mutiple calls, getting transfered to different people on the phone, and just generally getting jerked around before he finally got his refund. In fact he was finally forced to having to yell at their secretary over the phone reducing her to tears, before they finally took him seriously and sent him back his cash. Almost revoked his account over the whole deal. He felt pretty bad over causing their secretary to cry but he had just had too much and sort of went crazy there for a little bit.