using System.Text.RegularExpressions; namespace LCU.API.Internal.Operations.IncentiveApiLib.Services; public static class DataCleaningService { public static string CleanedPhoneNumber(string input) { var cleanPhoneNumber = input == null ? string.Empty : Regex.Replace(input, @"\D", string.Empty); cleanPhoneNumber = cleanPhoneNumber.Length == 11 ? cleanPhoneNumber[1..] : cleanPhoneNumber; return cleanPhoneNumber; } }