He said it was missing parts but he had some washers in his car.  After putting it together,  I sat on the chair and it was totally wobbly.  He said “oh that’s my fault. I didn’t fasten the screws all the way”.  I knew at this point it is was amateur hour.  My chair continues to feel wobbly and I don’t know if the chair just sucks or if he didn’t do a good job and assembled with missing washers. I also had to febreeze my house after he left.  The smell lingered for hours.  You cannot send people lacking hygiene. Overall it was an awful experience. I should have just done it myself or asked the building maintenance guy to do it ! 56 dollars to assemble an office chair for that kind of service is ridiculous. It also took him one hour to put together an simple office chair!!!!