Repository pattern with dynamic types [closed]

I am planning to use the repository pattern to call third party web service clients. What is the best way to use the factory pattern in this case. I was not able to add the code snippet initially. Looking for an elegant way to replace the if switch statement below.

  public class LoanRepository<T> : ILoanRepository<T>
        {
            public async Task<T> GetByIdAsync(string loanNumber)
            {
                if (loanNumber.StartsWith("A"))
                {
                    //Auto Loan
                    if (typeof(T) == typeof(Account))
                    {
                       // var client = new AutoAccountClient(new BasicHttpBinding(), new EndpointAddress(
                           new Uri("http://autourl/services")));

                        return new Account() { loanAmount = t.amt };
                    }
                    else if (typeof(T) == typeof(ContactInfo))
                    {
                        var client = new AutoContactClient(new BasicHttpBinding(), new EndpointAddress(
                          new Uri("http://autourl/services")));

                        return new ContactInfo() { consumerName = t.consumerName };
                    }
                } else if (loanNumber.StartsWith("M"))
                {
                    ....
                }

            }
        }