Not up to Standard Building Contractor

On 27 January 2020 entered a contract with the above enterprise to Build Braai Room. At that stage, the contractor promised to be finished between 10 to 15 days. As of today he has delivered the completed building back on 10 July 2020 after which a mail was forward to them with all shortfalls. On the 4-5th August, they come to fix the shortcomings which were not done in a proper manner. Roof leakings like a waterfall and building rubbish not still removed. Then they promised to remove rubbish before the weekend of -7 August which was not done and also promise to provide a date In 2 days when they will fix the roof which was also not done. After contacting 3 Roof Specialists they confirm that roof is of substandard and will cost R27000 to fix. This contractor can't be trusted and unwilling to rectify his mistakes as promised by him