UNHAPPY HOLLAND INSURANCE CLIENT

I joined Pep Hollard insurance for my grandfather in 2013 and I have been paying it since .Now in 2021 August am being told that my policy has lapsed

I went to their offices and I was told that I didn't pay the premiums for April 2014 and November 2017 without giving any proof but they were taking my money all along

I am very frustrated because my grandfather is old now and I waisted my money and my time thinking he is covered He is 76 years old now and they take him against

What should I do now ??????????