Bests & Worsts Reviews from Amazon

I had this mat under my keyboard for less than a year and discovered that it was no longer working at all. There was no damage or reason for it to stop working. I contacted customer support and they refused to send a replacement and only stated "that's why we offer the replacements mat for $30 on our website". I am appalled that the mat would stop functioning for no known reason. I did test the mat right after installing it and maybe a month later again, so I know the mat wasn't defective from the beginning. Earthing.com only offers a 90 day warranty per their customer service rep. HOWEVER there website states this on their terms and conditions page: "This site and the materials and products on this site are provided "as is" and without warranties of any kind, whether express or implied." OMG are you kidding me????? Also, they are in Southern California and so am I yet they charge $11 for shipping for the replacement mat. If you do need to buy this mat as I did (It was recommended to me by my homeopathic doctor after being diagnosed with brain cancer) please test it regularly! I also put together a youtube video showing me testing the faulty mat next to a working one. Search for "Earthing Mat Review - BEWARE! "