Sorry that you feel that way, but you have paid for an active license, not just support. Just like everyone else who has paid for a self-hosted license, you have received those benefits which come along with being an active license holder, including the latest software releases, spam defense system, GEO IP, and other benefits. Support is included with this, but you must meet minimum requirements for support which we post here.
As our standards of support policy states, we only support the latest release so if you choose to use an older release and refuse our support resolution of upgrading to the latest release which houses a fix to solve an issue, there is no further support to be had as you are choosing to go outside the bounds of our support standards.
Again, our support is still present if you're having issues upgrading the core software to the latest release.