Bad Customer Service

I purchased a bag of cat food in November, which remains unopened. However, my cats didn't enjoy it, and I still have some left over from a previous purchase. I asked if I could return it for a different product, but the company refused. I visited a vet clinic where I was informed that Royal Canin accepts returned items, even if they're opened and more than half full. This lack of service is disappointing, and it has led me to decide to take my business elsewhere. Despite my attempts to contact them, the company's website isn't functioning properly, making it difficult to resolve the issue. Ultimately, this experience has cost them a customer.