You need to remember that just because you are RVSM exempt does not give you the RIGHT to operate in RVSM airspace. All it means is that you are not automatically EXCLUDED from it as other non-approved aircraft are. More important is the fact that you may well not be able to be fitted in because of traffic loading. Remember that if you fly in RVSM airspace without being equipped we have to provide 2000ft separation between you and all the other (approved) aircraft.
For example: You are flying at FL370 eastbound, RVSM exempt. The next usable flight levels in your area are therefore FL350 and FL390. Therefore you are in fact 'occupying' three flight levels: 360,370,380. In dense traffic areas this is a lot to ask, and may explain your exclusion rather than a lack of cooperation.
Hope this helps.