Ho I am sorry to hear about that.
Ok first make sure the door seals seem to seal well.
Please let me know if they don't.
As for the ice build up, that is likely caused by a failed defrost component.
It could be the defrost timer, the Bi Metal sensor or the heater itself.
Please let me know if you want to troubleshoot this with my help or if you simply want to replace the three main components and be done with it as they aren't all that expensive and guarantees a fix for this and I will instruct you all the way on how to do this:-)
But since this question may continue for some time, if you will rate my service as good or betterbefore you close this window, the system here will allow me to schedule free follow ups with youso your question wont close or time out and you can contact me anytime at no additional cost.Thank youTech Michael