Even though e-commerce has made shopping significantly easier, especially when it comes to tracking down hard-to-find products and looking for the best deals, there are still issues that need to be addressed from time to time.

For example:
How do I complain effectively on a delivered product?

Can I get a refund if I change my mind?

What if a trader has gone out of business and I've paid in advance?

The Ministry of Consumer Affairs and the Commerce Commission has answers for these questions and many more on their sites.