Interest is always calculated on a per-annum (p.a.) basis. When an early repayment occurs, your outstanding principal and any interest accrued up to that date will be paid to your Debitum account.
This means that for the period between your investment and the early repayment date, the earned interest reflects the original terms. For example, if the interest rate was 16.5% p.a., the interest paid to you was based on that rate, ensuring you receive the full, fair return for the time your funds were invested.
You will not receive any future interest that would have accumulated between the early repayment date and the original loan term.