My husband worked in the police (at that time) for 5 years. When my husband

...killed, but when it came to issuing a survivor's pension, it turned out that the police did not submit reports to the pension fund, and when calculating pensions, the husband's work experience from the police was not taken into account. Turning to the national police, they provided a certificate, however, that the man did indeed work, but they cannot provide a certificate of income, because the archive was destroyed. How should I proceed?