I'd guess your rose bushes have been visited by the same rose slugs (sawfly larvae) that tend to attack rose bushes every late spring/early summer. This is usually a temporary problem--then the good predator bugs come along and gobble up the rose slugs, and there is no more problem.

However, the bush is often left with ugly damaged leaves. I would just pluck off the worst looking ones, and then wait patiently for the bush to produce new leaves (followed by buds and then blooms).

In the future, it would help if you checked the bushes in the late spring/early summer for tiny, tiny green wormlike things--usually on the underside of the leaves. When they are present, squish them. That will keep them somewhat under control until the good predator bugs arrive a couple weeks later.

As for the not flowering well problem, that is just part of the normal bloom cycle of any rose. A rose blooms for a couple weeks, then the blooms deteriorate (turn brown) and fall off, then the bush rests and renews itself, then it starts blooming again. Most roses go through several bloom cycles per season.

When the blooms deteriorate, the bush will look better if you deadhead it (pick of the brown old blooms). Deadheading sometimes encourages the bush to begin blooming sooner also.

Hope that helps.

Kate