Repointing Dramas

I hired a local facade company to do “necessary repointing” on the rear exterior (21′ wide/4 stories) & I’m dissatisfied with the finished result; there are many spots/holes visible that still need filling. They’re willing to come back and repoint more, but they’re telling me that I really needed to have the entire back “granded” and repointed entirely (not sure if I used the right terms), and that would be an additional $2500. I feel like it’s a bait and switch; that they should have evaluated that correctly at the beginning, but I’m not sure if the patchwork is worth the money…if, even when they come back, the results will be OK. So the question is if “necessary repointing” is ever worth the money and/or if I should just do the whole thing over. One background note, my inspector told me the back would need repointing when I purchased the house 6 years ago.