Customer called us out for a clogged toilet. I inspected the toilet and noted it was from 2002, had signs of build up on jets, had a slow flush and the fill valve was installed to short. I ran the toilet with and without toilet paper. It clogged pretty easy with toilet paper but cleared itself on the next flush. I recommended a replacement toilet. Customer was not ready for that today. Customer chose to have me attempt to clear the blockage with a closet auger. I ran the auger and had lots of resistance, when pulling it out chips of build up came with. Ran it a few more times with less resistance each time. Tested toilet and it was flushing significantly better. Still recommend getting a replacement toilet.