Help in Averia

Good afternoon everyone I have a Seat Cordoba 1.9tdi and when I put the contact the air conditioning is automatically turned on and the temperature is very high that now with the heat because there is no one who takes the car I give the button to climb and lower the temperature and it does not work they have looked at me and everything is going well and I do not know now after that they have disregarded me I lose the radio station and the volume is low. Before the more heat thanks to all and a cordial greeting