Sun Cover Sun Shades

Had pull blinds installed in 750 sq ft condo. Installation was good and punctual. However, the blinds themselves have experienced errors in a relatively short period of time (i.e. less than 2 years). Installer came back to fix the first issue, but was surly about it. Ultimately, it was just a broken part due to cheap materials. Installer left the job partially unfinished. I've since had another issue. Despite dozens of emails, they've failed to come back and rectify either issue. I now have to try to complete the repairs on my own.