For starters, you had an inappropriate service imposed on you. Either you tell them what service you require, or ATC should ask you. ATC say whether they can provide it or not. From what you've written that hasn't happened.
Next - the Controller involved was being extremely unhelpful as has been said, and not particularly bright. If you have an AIRPROX, they will get suspended and subject to an investigation. If you have a TCAS RA - same again. Pointing you at a military aircraft manoeuvring randomly, although perfectly within the rules of the service they've placed you under, isn't going to cut the mustard at the subsequent enquiry.
I'd submit your account for inclusion in CHIRP based on what you've said. In the future - ask for a Deconfliction service.