Water Pik

Hi, I ordered a WaterPik flosser on 28th Feb 2023 for my mother through Amazon and the flosser suddenly stopped working . The flosser is still under warranty and I tried to reach out to their customer service where I was being told to send the flosser back to US in order to see whether it’s a warranty problem or not. My concern is , I live in Canada and in order to send the flosser back to US there are international shipping charges associated with that. I asked them to provide me a return label or provide me an alternative but seems like they are not helpful at all. I even sent a follow up email yesterday for which no reply has been sent. I spent $112.99 thinking that it’s a good company and the product has enough warranty but seems like it’s not worth it. Please help me fixing this problem as it’s for my mother and she really needs the water flosser for her oral care because she is old. I am not looking for any claim or money but I just want my flosser to be fixed asap.