What should I do about this situation?

I've been casually dating a guy for a few months, nothing serious. The problem is that he cancels our dates about 75% of the time, usually at the last minute. He is always very apologetic and has a good reason. The last time he did this, we had made plans over a week ahead of time to spend the day together, and I had turned down two other offers for that day. I didn't find out that the date wasn't happening until I texted him at 10 o'clock the night before to confirm. He agrees this is disrespectful to me, says he only wants to make it up to me, apologizes profusely, says he really likes me and wants to see me, etc. We have a great time when we do get together, and I really like him. BUT, I don't want to be treated like this. I am tired of making plans and having them fall through all time. Should I just stop seeing him?