I see people talk about this a lot that the micro players will call with anything, which is very true a lot of the time, but they are still beatable. If you want to get around a lot of that, you might want to deposit a little more money and got up just one limit. Many times you will get the biggest donks at the lowest level that a site will offer, so if you move to the next level, it's possible you will get away from a lot of them. Although, usually if you are unable to beat one level, you're probably going to have a hard time beating people at a higher level up.
You might want to try looking at your stats, because of a lot of people who I've talked to having a similar problem, I usually find that most of them are playing way too many hands, VPIP's up to 45-55%. Even though it might not seem like you are playing way too loose, it might be the case. Try tightening up a bit and your hands might be able to hold up a lot better when you're in those situations against the donks.