I was going to reply in comments, but thought I'd give an answer instead. I've had a candidate do basically what you've done so I can at least answer from the other side. If your personal issues are health related, it does make it kind of tricky. Unfortunately, from their perspective, unless you're some kind of industry god or they're extremely laid back, you're probably on pretty shaky ground by now.
The first time you became a ghost for not just days, but months and that's at the very least a huge red flag. Granted, after your return and explanation (I'm assuming it was health related or something as important), they probably thought "OK, this guy did bail on us, but he ended up having a good reason so we'll let it slide. He looks like a good candidate, and the position is still open, so let's see what he can do."
Then you bailed again. :/ This time without a reason (bad advice). I had a candidate cancel on me twice, the second time was 10 mins before the interview and we had already blocked out time for him and everything. After that, nobody cared about him. We wondered what kind of worker he would be if that's how he approached something as simple as the interview. Basically, we felt he didn't want the job, nor did we want that kind of work ethic.
While I agree with Joe in that you have nothing to lose by trying, I probably would either expect not to be given the chance again, or at the very least have a possibly awkward interview with people who have only really experienced the worst of you. Again, they could be really laid back and in that case, yea, try it out. Working for someone that tolerant to your actions is rare. That may also be a red flag on their end. Will they be that laid back paying you?
My personal recommendation is to get better, and move forward with another company and DON'T DO ANYTHING LIKE THIS AGAIN. Always have a good reason, always be polite, forthcoming, honest and grateful. People will understand and tolerate personal responsibilities, but not being blown off repeatedly.
Oh, and for the future, you don't have to give a reason only when you are intentionally 'burning a bridge'. But if you expect to cross it again, you better have a damn good one.