Of course they will try to influence you if you let them. You have to make it clear that development of new features (or fixes to issues for which there is no r

Of course they will try to influence you if you let them. You have to make it clear that development of new features (or fixes to issues for which there is no reasonable workaround) is not part of the support contract and they will be separately billed for it. This is how it works everywhere I've worked at.