I think they asked for a ball change an absurd amount of times across the series - at least it felt that way. I was surprised the umpires allowed it, given how often they had to check the ball and confirm that it was fine.
As much as we were stitched up by this ball change, I think it does raise a valid, separate issue.
If the ball goes to shit because the batting side is tonking it, isn't that an advantage that the batting side has earnt?
Why does the bowling side get to change the ball if they have their arses handed to them, and the batting side losing that benefit?