2001 Ford Escort Radio

I'm not 100% sure on the year but it's not too far off of a 2001. However whenever we put a cassette tape in you hook up the Ipod or phone, the cassette doesn't work. It doesn't eject, we got the old one out and put a new one in but now the cassette went in all the way but won't go down. Not only that but whenever we hit the button to go from the radio to the cassette and back to the radio, every few seconds it will go from the radio back to the cassette. This is a little confusing haha but is there any way you know of that it can be fixed?