At LifeX we process refunds and one-off discounts via a credit note. A credit note is a form of "negative invoice" used to refund an amount that you have paid for our products or services.
In practice, you will receive a credit note for X amount once the deduction occurs, which can be anytime during the month. Your next recurring invoice (i.e. monthly rent) will not reflect the deduction because these ongoing invoices are sent out automatically.
Therefore, you should deduct the amount stated on the credit note from your next payment sent to LifeX. In case you are moving out the following month, the deduction will be refunded with your deposit.
Ongoing discounts offered (ie. ones that will occur for an indefinite period of time) will be reflected in your recurring invoice.
Should you have any further questions please reach out to us through the LifeX app.