Oookay, folks, put down the coffee and step away from the keyboards.
Erikajosefine –
You have two options.
1) Pick a NON-responsive theme
2) Learn the CSS to make this non-responsive (the ‘easiest’ way would be to make a child theme, copy the whole CSS over, and delete everything for responsive sizes)
No one’s flaming you, no one’s attacking you. They’re telling you the facts, and it’s possible that something was lost in translation. It happens.
You say you normally purcahse themes. Perhaps you aren’t familiar with how free support on free themes work: It’s mostly DIY. If you want to hire someone to make it non-responsive, I suggest https://jobs.wordpress.net
But remember: Not even the theme dev is obligated to make this an option. The dev decided to make the theme responsive and that it shall be. They’re allowed to decline to make more options for their work ??