Short answer: I would look for a different midwife.
Long answer: Depending on what your options are for midwives in your area, I would still seek out a different midwife. If your options are limited (to the point where she's kind of it), then I would try to discuss your concerns, and see what she has to say regarding them. When it comes down to it, choosing a midwife is more or less like any other consumer/buyer decision you may make. If the service she's providing is not meeting your needs or expectations, and she is unable to fulfill your (reasonable) expectations, then I think it's generally in your best interest to look elsewhere. I also think since the situations you have issues with have all been regarding her reliability in getting back to you, and they weren't isolated to a short time period-like some personal situation that interfered with her ability to get back to you-I personally don't think that's likely to change in the future, but that's just my $.02 on the subject.
Either way, I hope you're able to work things out to have the care you want and deserve for your pregnancy and birth.
