We purchased a vitacci t rex go kart for our 2 grandsons for christmas. It arrived on time, but it takes forever for it to get enough speed to go. My son is a mechanic so he submitted a ticket with family go karts requesting a manual in english. We were told there is none. We have had no response for 2 days from technical support. My husband sent an email to the owner 2 days ago (they will not let you speak with him) and no response. My husband called again today and go the most rude person that began being rude as soon as she answered the phone. He found another number on youtube for technical support and spoke with a different woman. He explained this was for our grandson's christmas present and he didn't want to give them a present that didn't work. She said she tells her sons that "sometimes life just sucks". My husband said we just want to speak to a technician for one minute. She told him they work on problems during the day and process trouble tickets at night on their own time. What type of company is this???