Just bought 12k worth of avidyne: a ifd440 plus axp322 transponder. Goods were ordered yesterday so still en route. Called avidyne tech support just now with a detailed question per my a&p to clarify pros and cons of efis/airdata protocol vs gad42 suggested in their manual. Needed this to know what encoder to order. The rep spoke over me, ignored what I said and repeatedly reiterated useless information I had told them moments ago, then when asked about whether adsb could come in on serial vs 429, told me they were going to hang up on me and did so. Bottom line: spent $12,000 last night: first tech support call the rep purposefully hung up on me. Should I cancel the order is this an isolated thing? What have been your support experiences with avidyne?