Wrong Zestimate Unable to be changed

I have a property with the wrong zestimate for a prior, the month which I purchased the property. I emailed in 1 on 1 and was told there is nothing that can be done. The zillow page shows a different number than what was imported in to stessa and I provided that as proof, still nothing can be done. So the growth calculation is wrong because it imported in a valuation number that was way different than what we purchased it at.