Apple Special Entitlement

We require notification suppression for a feature we're working on, and to enable the same, we found out we need to request a special entitlement for notification suppression. So as per Apple's website, we applied for the same, and it has been almost 2-3 weeks, yet we've got no response, neither a confirmation nor rejection. We've email multiple Apple support people, and there's been no response from their side so far. What are the next steps we can take? How do we escalate the same to Apple for an expedited response? And if possible, how do we suppress notification without the entitlements?