I know it seems like the end of the world now, but honestly, A-Levels are not the be all and end all. What I would seriously advise against is just going to uni and doing any course just because you feel you have to. If you're not committed then it'll just end up being a waste of time and money.
I was in a very similar situation to you - throughout my GCSEs and A-Levels I was seriously bullied at school, which led to me developing depression and never really achieving the grades that everyone believed I was capable of. I was an 'Oxbridge' student etc etc, but because I missed so much school and because I really didn't care I just didn't do very well at all. In the end I took a 'few' (lol) years out, thought about what I wanted to do and I've just graduated with a First - so please believe me when I say that A-Levels don't really matter, and just because you haven't got brilliant grades it does not mean that you're dumb or stupid. You're not.
Calm down and look at your options logically. Was it just the environment of school that you didn't like, or was it studying for A-Levels itself? If it's the former, then, if you can afford it, maybe look at taking retakes somewhere else. If it's the latter, then maybe you could take a year or so out, get a job and work for a while - there is seriously nothing like a rubbish job for helping you to clarify what you want out of life! Like I said before, don't rush into taking any degree just because you think you have to. If you're not sure, then take some time out to think about it. You don't have to go to uni NOW ... you can retake and then apply, apply in a year or so after gaining work experience, work for a few years and do an Access course, apply as a mature student off your own back (that's what I did). Your options really aren't limited, despite how you feel at the moment.
Please just take a deep breath and calm down - A-Levels and a degree aren't everything, they help, but it's not going to be all you need to get a decent job. Even with my degree, what's getting me the interviews and (I hope) the jobs is the fact that I have a lot of work experience, and I've done a lot of voluntary work in my field in the past. You need to think carefully about what you're going to do, but (and I don't mean to sound patronising here

) honestly it's all the other things that you do and how you handle this that's important, and not a few grades.