Diagram Books

Refund policy

Guarantee

30-day guarantee: if a file doesn't open, if the content isn't what the product page describes, if you were charged twice or the email never arrived, write to us and we'll refund you in full. Ask for the refund within 30 days of purchase, writing to hello@diagrambooks.com with the email you used to buy. The guarantee is in addition to, not instead of, your legal rights.

Singapore

The Consumer Protection (Fair Trading) Act 2003 (CPFTA) protects you against unfair practices, such as a false or misleading description of the product; if the content is not as described, you can claim under the CPFTA and under the contract. These rights apply in addition to the guarantee above and nothing in this policy limits them. The Consumers Association of Singapore (CASE, www.case.org.sg) can assist with complaints.

How refunds are made

Refunds are approved by the store and made to the payment method used for the purchase, through the payment provider. How long it takes to show depends on your bank or card.

Contact

Questions: hello@diagrambooks.com.

Last updated: 2026-10-23