Unfortunately, you will have to be the squeaky wheel. If they are actually submitting the forms to the IRS, then without the corrected box being checked, they just over-reported what they paid you.
There are companies who issue the 1099-MISC's but never actually send the forms to the IRS. If this company has that type of lax accountability, it would explain why they didn't check the corrected box. If they state that they don't actually submit them to the IRS, I would get it, in writing, that the first 1099-MISC is voided.
