I wouldn't have rung whoever it was if they hadn't been putting themselves out as "agents" for Lowrance in whatever pilot magazine I was reading and able to supply the bits and pieces I needed. Whether it was the people you are mentioning or not I don't know and frankly I don't care - the essential point is that Lowrance have lost a customer (me) because of the lack of support for their product, and it is unlikely that I will consider their products again. Your agents might be nice guys, but demanding a serial number before they will do business is not a good way of keeping customers! Personally, if I have to use Lowrance products under conditions like that, I will buy Garmin every time.
G