Delayed payment of monthly Income Protector payments after weeks of review.

The call centre is unable to confirm when the payments will be released agains my income protector claim. I received approval and queried the payment dates, but no one can assist or was willing to escalate this matter. After months of not receiving any income because of Liberty processes, this is surely not fair any further. I've waited for all deadlines set by Liberty and now they can't answer anymore.