Our son was so-so with the bottle at first also. We introduced a bottle around 4 weeks, and while he would occasionally take as much as 2 oz, he often refused it. I was freaking out about returning to work and it was obviously frustrating for my husband, who was in charge of the bottle feedings.
What finally "clicked" with us was one Saturday my husband gave him a bottle midday, after baby had woken up from a nap. The entire bottle was drained within minutes, and from then on, no problems with bottles. Prior to that we had mostly tried bottles first thing in the morning or right before bed. In retrospect I think these times may have been not so great b/c in the AM baby was too hungry to think about trying something different (having just woken up from an extended sleep session), and in the evening he was probably not hungry enough (since he often would have eaten just an hour or so earlier. So my advice would be to try offering the bottle at different times of day, and also just to keep at it--babies change a lot at that age, so something your kid can't stand this week could be totally normal next week.
All that said, I personally know two women with infants who completely refuse to take bottles. The mothers both work FT, so the kids frequently go 8+ hours without milk. Apparently they then stay up all night nursing. The mothers are obviously less than thrilled with this setup but the babies are growing well.