Installation of Theme and demo data not working correctly

Hello, this is my second ticket and various emails to Jim, I have installed the theme and installed demo data using carparts theme, homepage looks fine but other pages show furniture theme, I am unable to edit header and footers and the colour schemes are all out of sync on other pages. I have been trying to sort this for 5 days and my client is getting annoyed now we are unable to progress with our design. Please can you install the carparts theme to look identical to your demo version including all pages please? Reset if you need to.