Can I cancel my SoFi Private Student Loan while it's in certification? May 04, 2021 22:04 Updated Follow You may cancel your loan at any point in the certification process by contacting us at 855-456-7634. Related articles Can I list both parents as co-signers on my Private Student Loan? / Can I have more than one co-signer? Types of Investments with SoFi Invest How often is the interest accrued and compounded? Is Plaid secure?