If the cold is coming in on the hot side and hot coming in on the cold side when I turn on the tap on the sink ;what can I do the fix this? I have change the line and still hot is on the cold line and cold on the hot line. HELP HELP Please!!

Try switching the lines under the sink. This should take care of the problem. If this does not work please explain the problem further.

LaVerne55 - Another way to find out where the water lines are crossed at would be to trace the hot water line from your hot water tank towards the sink and find the cross ed line , you should find it before you get back to the sink . Good luck and have a better day tomorrow and GOD BLESS ::F.B.E.
Let us know if you find it and get it fixed