somethings not right there,its obvious that the bloke who did the first test did not check it properly,i would go to the ministry of mots and report them,because rotting chassis and sills does not appear after 6 days,they are normally allowed a month.bloke at the garage i used to work at once passed a car and he came back 2 weeks later pointing out what he missed on rotten chassis,he offered to do the work for free so he wouldnt lose his mot licence