Bought a knife two weeks ago, didn't work for me. I asked to return it. They said I could exchange it, to ship it back UPS, use their return authorization etc. I asked to purchase in it's place a Protech running around $10 more than the original. I've emailed 2 or 3 times, I 've also left a couple of polite voicemail requesting an approximate arrival time for my new knife. All I get is an automated "thank you for contacting us, we'll get back to you". it's been over a week. Any suggestions?