How to correct a botched stained concrete job?

We are terribly disappointed with the stained concrete job. We expected a smooth saddle leather look and instead it is speckly and spotty. The contractor pressure washed and allowed the patio to dry overnight, then applied stain with a pump sprayer and sealed it. Did he skimp on stain? Does this have to be sandblasted to be re-done? Thank you!
q correcting a botched stained concrete job
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