United India Insurance Company [UIIC] — complaint regarding the incorrect idv of insured vehicle

Dear sir/madam
I wish to inform that i got my two wheeler insurance renewed through united india insurance dealer - amarjeet singh (Mob no. [protected] agent no. Agd0047958). The proposal form mentions idv of rs 27000 (With 10% depreciation from last idv-rs 30000) upon which premium was charged of rs 1400.
However. When i received the insurance policy, it has been noticed that idv was reduced to rs 22500.

If the idv in proposal letter is 27000 how the value was changed to 22500 in actual policy.
The matter has been reported to the concerned agent but he started ignoring the calls. When issue was escalated to the branch office and headquarter, it has not been explained by any official of insurance company.
I wish to have the idv corrected for my policy.
Policy no. [protected]p[protected]