What is the customer service number for fidelity bank? Fidelity Bank Customer Service Phone Number. The Customer Service Phone Number of Fidelity Bank is: +1 316-268-7456 / 3355. Fidelity Bank is originally known as Fidelity Bank Plc. It is a financial services company that was formed in the year 1988 with the name Fidelity Union Merchant Bank Limited.What is the phone number for fidelity 401k? The customer support phone number of Fidelity Investments 401k is +1(800)-343-3548 (Click phone number to call).Where is fidelity national financial headquarters located? Fidelity National Financial is a title insurance company that provides commercial and residential mortgage services. FNF was founded in 1847. FNF's headquarters is located in Jacksonville, Florida, USA 32204.What is fidelity number? The Customer Service Phone Number of Fidelity Net Benefits Contact is: +1(800)-343-3548, +1(800)-544-6666. Fidelity Investments is the America based company that provides financial and banking services.