美国采购需求：热敏打印机、收据打印机、移动打印机、便携式打印机、标签打印机、条形码打印机

I recently received a printer, but I'm facing some issues with it. It won't charge properly, and I'm unable to connect my phone to it. I've tried a few troubleshooting steps, but unfortunately, nothing seems to work. It's critical for me to have a functional printer, and as of now, this isn't meeting my needs. I'd like to know what steps I should take to either get a refund for this defective product or receive a replacement printer. Could you provide me with the necessary procedures or forms to initiate this process? I appreciate your prompt assistance in resolving this matter, as I rely on having a working printer for my tasks.