disability insurance blowing me off

im permanently disabled.nine + doctors and specialists have stated so.my occupational insurance company has been benefiting me for three years on a tmporary disability status.now its time to change over to permanent,and they keep blowing me off with excuses..its been weeks, they said theyd call me back after their superior gave a decission...i have a policy and have on numereous occasions read and reread its terms to them.even the social security disability folks have spoken with them stating that the policy is good...how do i get this issue resolved?