Air conditioning leak

I am so frustrated with this, my car keeps leaking inside the passenger side when I use the A/C or heater water is ice cold they said my condensation release tube was clogged went and had the hoses blown out to make sure they got unclogged. Worked for like a week and once again it leaks. It is not the heater core because the leak comes from near the very back in direction of the glove box. Can something be cracked and if so what can it be? Tired of changing carpets it is crazy how much water accumulates and now I cannot even see the the drain tube is. And where is it connected so that the water is dispensed. Please someone help!