Oscar Wylee glasses

I’ve worn glasses daily since I was 12 and I’m 33 (for context), and this is the only brand that immediately gives me the worst headaches. I thought it was because they were too tight, so now they are super loose that they fall off and I still get headaches within literally 2 minutes of wear.

Has anyone else had issues with this brand? It isn’t the prescription, as my contacts are the same power and no issues with them at all.

Edit - went in store today and spoke with the manager. She was able to sort the problem right away. The fit and the tilt of the frames was wrong, they were too flat and my astigmatism wasn’t compensated for. So all sorted, and so far no more headaches.