this was their response "Dear dennis ,
Thank you very much for placing your order with us.
1 the frequency of remote control is shift error, you need to change the frequency of the file;
2 remote control transmitter is wrong, you need to replace the remote control operation;
3 you need to replace the receiving board.
Could you please check our warranty policy? http://www.gearbest.com/about/warranty-and-return.html
Best Wishes for 2016
Gearbest customer service
yhis is after i explained to them . ESC is faulty. you tube showed many others with the same issue. i swapped the esc with one of the others (quadcopters have 4) and the fault moved. i swapped it back and the fault moved again. DO NOT USE GEARBEST. Hobbyking sell the same quadcopter for a similar price as a Quanam novo and if i had brought it from them i would have my warranty dealt with honestly.
Reviewer is in unhappy mood. Please immediately contact the author of this review to discuss damaged or defective of cheerson cx-20 auto pathfinder gps rc quadcopter. Gearbest needs to read this review and look into the issue (if any) according to poster's claims.
Other people also mentioned cheerson cx-20 auto pathfinder gps rc quadcopter in their reviews. You may find this information helpful for further shopping at Gearbest.