Auto & General insurance and Proline incovinient service!

My car was insured with auto & General. My mother was registered as a regular driver. In 2018 March I got married and I changed obviously changed my adress. June 2018 I was involved in an accident on freeway of which I was not at fault. I then contacted auto & General they told me not to remove anything from the car except for my personal belongings. Proline was the one who towed the car. To my surprise they stole my toolbox and petrol cap and my spare wheel. Auto & general refused to pay my claim because they said I did not notify them I am married and I changed the address. I had to take a loan to fix the car and my studies got delayed because I had to pay back the loan. Meanwhile Auto & General took their premiums every month without fail. Proline kept my car for the whole month collecting dust. How do they expect me to drive without a spare wheel. Since then I have been calling proline but till today they still getting to me.