There are a couple of things I don't like about how Konica Minolta does things, but that's more a personal preference than a "Makes-No-Sense-Whatsoever" or "Mess-Over-The-Dealer" problem.
Konica makes us switch regions every year, which means we have to get used to an entire new set of sales managers and administrative people. But, once we know who they are, things are fine. There's a West Coast-based dealer on this board who has issues with Konica's service support, but I've never heard of any issues out here in the Midwest.
We don't seem to have the problems that you do with the branch going into our existing clients. When they find out their error, they generally back off. Konica prohibits their branches from saying that they are better than the dealer because they are "manufacturer direct." More of a level playing field than what you've described in your territory.
Konica and Ricoh handle their pricing contracts very differently. With Ricoh, if I want to offer a special price to a client who isn't eligible for one of the national contracts (ie., US Communities), I have to register the client for DMAP with a minimum purchasing commitment of $50K or more. If the client doesn't purchase the minimum, you get hit with a chargeback. And, you're looking at a separate DMAP commitment for every major account. With Konica, my purchasing contracts are cumulative and not client specific. Occasionally we can get a contract with special pricing for a major account, but we don't have a purchasing minimum. These are negotiated directly with our major accounts sales manager.
(Edited to say I am not sure that I answered your question. We can't experience the same problems because the two companies operate so differently. I will say that I find everyone I deal with at Konica to be knowledgeable and responsive.)