metropolitan properties LLC review: refuse to change the windows 1

my landlord for too long to change the windows in my apartment. I moved in this place in March, and when we were seeing the house, they said they gonna change all the old windows into brand new windows. Because the old windows are falling...and it doesn't keep warm. When we signing the contract, they said they will do it the week after, and we waited and waited, no one's come to fix the problem. It's in April already, the weather is been nice for a week, sill, no one come or even said anything about this problem.