2007 Honda Fit - Tire Wear/Alignment Issues

The tires are wearing on the inner edges, both front and rear, but more so on the rear. The first time I had to replace my tires, the wear was due to the alignment. The dealer adjusted the alignment. I went back three months later to because the tires were starting to wear again and they had to adjust the alignment again. Eight months later I had to replace the tires again due to wearing on the inside, but the alignment seemed to be okay. Now it’s been 10 months and my tires are again wearing on the inside and the alignment appears to be off.