Sorry to hear about the problems you're having with Service Broker.  I tried Service Broker for a limited use-case a few years back after being introduced to it during an exam.  I personally do not like it and have stopped using it.  I'm wondering if you have considered a different approach to solving your business problem (instead of using Service Broker).

Do you know Denny Cherry?  I've heard him talk about Service Broker (I believe it was a conference) and he seemed very competent with it.  Maybe you should send him the question - https://www.dcac.co/