What is the phone number for one main financial? The phone number for One Main Financial is (317) 706-1201. Carrie Stoots is the Manager at One Main Financial. You can contact Carrie at (317) 706-1201.Is onemain financial a good company? Based on the company's lending experience, track record, and certified lending experts, OneMain Financial does seem to be a legitimate company. If you're only interested in a consolidation loan, OneMain Financial is a good choice. Just be sure to understand the loan term, interest rate, and have a solid plan for repaying the loan.What is the telephone number for one main? Phone Number of One Main is 877-550-6246 . One Main came into existence in the year 1912. One Main offers the loans to the customers.What is credit one phone number? Credit One Bank Customer Service Phone Number. Phone Number of Credit One Bank is +1-702-405-2042, +1-800-797-4299, +1-800-752-5493 . Credit One Bank is an American banking company that is known for its Credit Card services.