To cancel Alder Security, call 844-442-5337 Monday through Saturday 6 a.m through 11:30 p.m MST. You can text support at 801-590-3620 Monday through Friday, 7 a.m through 7 p.m MST or Saturday 7 a.m through 5 p.m MST. You can also email support at customeradvocacy@alder.com, or submit a request at https://alder.helpjuice.com/contact-us.