We are sincerely disappointed to hear that your fan has been behaving abnormally and changing speeds on its own. It is possible that there is interference from other ceiling fans and devices in the area. That can be easily remedied by changing the dipswitch code in the battery compartment of the remote and matching the code in the fan’s receiver located in the canopy. If that does not resolve the issue, the fan is covered by a manufacturer warranty. You can obtain warranty service, troubleshooting assistance, and replacement parts by contacting customer service at 1-800-986-3460.