Do you have to do comp corrections at the end of every sales month because the reporting and finance team never get it right?

The past 3 months I have spent no less then 2 full workdays in each month doing corrections for deals I was not paid on or not paid correctly on. Just today I resubmitted something for the 4th time now to my manager for finance to fix. Im sick of wasting my selling time doing someone else’s job. I am asked to do my corrections and am held to that, so why do I still not get paid correctly after submitting my corrections? They have one job. I have to submit them another time and another time before it’s actually done. If I wasn’t my own advocate, I would miss out on thousands and thousands of dollars in my paycheck monthly. Do other companies have such difficulties? I specifically sell advertising to car dealerships