Dry slide out is full of water

[Amurdock]

I have a 2013 Raven and the slide out has no water lines in it. While camping in KC, KS the weather turned bad and the slide stopped working, I took it to camping world in Winzchster MO, where they informed me the floor was full of water and had frozen. I see no leaked and having just bought the camper in may of this year as soon as I bought the Raven CK3300 I took it paid extra at the dealer to seal coat the roof and the slides when I picked it up I took it home and redone all the caulking myself. I do not know what else to do to stop water from getting in. I stay in the camper a lot for work and the guys at camping world charged me a lot of money and messed up the adjustment on the slide but got it to work. I will have the slide out repaired when I get it back to Texas, does any one know where I went wrong or how the water could have got in.