Aswini, I think you may have misunderstood the nature of open source projects. Open source projects are addressed by a community of interested users who implement enhancements and work on problems based on their needs and their interests.
I think the response you're expecting is much closer to commercial support, rather than an open source community. You might consider contacting CloudBees about their commercially supported offering based on Jenkins.
There is also a concept of a "bug bounty" that I've seen offered elsewhere in the Jenkins project, though I'm not sure if that generally has the result you are seeking, since you seem to be seeking response times more typical of commercial products than open source projects.
Any updates on this issue?