I understand your frustration, but I don't think you're correct in what you're saying.
Yes, most of the study is independent. Yes, there are few assignments and you don't necessarily get a lot of feedback given to you. However there are tonnes more opportunities that university gives you other than the timetabled hours. I have no idea how much study you are putting in, but if you do the amount of hours that the modules suggest, you will learn a lot. The more you read, the more valuable your tutorials and seminars will be and the more questions you will have. Ask your tutors and lecturers about things that you don't understand. They should be more than happy to get back to you. Query any feedback you get - tutors should be happy to elaborate. Get involved in subject related societies and events and you'll find another use for the information.
My experience is that the people who felt there were too few hours are the same people who really only study their subject during those timetabled hours. I'm not saying that's you, but it definitely applies to a lot of people. It applied to me the first time round.
If you really don't think university is for you, consider leaving. You might find a job to be a lot more fulfilling.