Deluxe Windows

We have been trying to contact this co to come out and reseal and check these two windows. We have been experiencing alot of condensation on these two windows only and not the other windows. Also this room is very cold. when we mentioned this they said we have a humidity problem. I don't believe this why don't the other windows fog up also. We call and left a msg. One time someone answerded the phone and said we will get back to you. We have been calling for a couple days now and no one answers the phone. They also said we would have to pay for someone to come out and check and if the problem is a humidity problem we would have to pay. I think this is really bad customer service and I really don't recommend this Co.