Worst service ever and undermining people

At first i had water licking from the walls and i called them, the came with so may excuses not to pay, I ended up fixing it by myself yet i pay my monthly installment. 2 weeks ago my kitchen caught fire and i called them. They sent the assesor and nobody botgered to get back to regarding my claim, i had to call them over and over to enquire... Today i called and was told my house is underinsured... Like ***? All this years they hv been deducting money from my account they ddnt mention all that. N my everytime there is an increase on the premium they ddnt pick that up? M sick and tired of this insurance company. So had a storm came n my house got messed up its only then that i would hv been told m under insured? Im fuming at this stage and to be quiet honest m dobe with them