I'm sorry to hear that you are having problems with the refrigerator. This problem is usually caused by the drain tube being clogged. I recommend that you manually defrost your freezer first, and remove all the ice from the bottom of the freezer. Then pour hot water into the drain, #5 on the image below. You can use a turkey baster to do so. This is located at the back of the freezer. Make sure that the inside of the freezer is dry before turning it on. If the ice begins to build up again, then you may want to schedule service for the issue. The leaking is due to the drain being clogged as well, so once it's clear it should stop. I hope this helps.
If you need further assistance, please reply to this thread.