Snatcher as platform I do not have a problem with however I have ordered a cover for an oppo Reno 8 pro but I received a cover that could barely fit my phone

Snatcher as platform I do not have a problem with however I have ordered a cover for an oppo Reno 8 pro but I received a cover that could barely fit my phone. Yet the packaging and advert is written oppo Reno 8 pro. Having waited for 11 days for this product it was really disappointing. Now I have to follow a process of returning this item and asking for a refund....not on!