Bests & Worsts Reviews from Amazon

After the initial set up a week ago, I started hearing a high pitched whirring noise coming from the left side underneath the desk. When I unplugged the "motor" on the left side the noise subsided. I contacted the seller because I cannot use the table with the non stop high pitched noise emanating from it. The seller responded but didn't know of this issue. So, I plugged the cable back inside the motor to confirm it was still making the sound. At that point the desk went up to the highest level on the left side ONLY! My Mac and all other items on the desk started sliding off the table. I was barely able to catch my Mac desktop before everything else fell to the ground. At this point, I am hoping to get a full refund. This desk could have cost me my Mac desktop. Very dangerous.