You can get in touch with LoanBuilder's customer service team by emailing customerservice@loanbuilder.com or by calling 1-800-347-5626. Support agents are available from 9 a.m. to 8 p.m. ET Monday through Friday and from 11 a.m. to 3 p.m. ET on Saturdays. According to Loanbuilder reviews, the customer care staff take no longer than a few minutes to respond.