Flooding in a basement what do we do? ?

I bought a house about 8 months ago. In the basement garage the door had been closed off and made into a regular door instead of a roll up garage door. To the far end of the garage there is a huge work bench with several outlets and a utility sink. Under the sink there is 2 foot hole with what looked like some sort of a pump thing. When i bought the house the realtor stated that he used the garage to wash things and use it as a workshop that is why there is a pump to remove the water. We had a inspector look at the house who told us that having that pump there was illegal if it was hooked up and trying to be used but since it was not connected to work it is not illegal. Not more than 3 months after we bought the house did the basement flood. And when i mean flood i mean it was like 6 to 9 inches deep. it went past my garage into my laundry room and two rooms down in the basement and that bathroom was so bad it pushed up the linoleum flooring. I had it cleaned and thought it was a fluke. I had a contractor look at it and said to put sand bags inside the "new wall" that that is where the water is coming in at. Just recently about a month and half later it has flooded again! this time 9 to 12 inches of water through out ruining my furniture in the two rooms, my bathroom vanity downstairs, and my laundry machines. I have contacted the insurance they said it isn't covered bc i Odint have flood insurance ( i dont even live near a flood zone.i have looked) and it was not disclosed on the selling of the house. I called a professional into clean the basement bc i am worried about mold and such he said you can tell that this basement has been flooding for awhile now. What should i do? I am currently getting estimates to find out how to permentely fix this problem. Any Advice?