MORE IDEAS FROM THE ARTICLE
It helps to complain as soon as you know you have a problem. The more recent your experience, the greater the weight your complaint will carry. Also, memories fade, records get buried, and work staff gets replaced.
If it seems you are being neglected, apply leverage by complaining on social media, also known as Twitter shaming.
Instead of buying warranties, consider setting up your own warranty coverage by putting the money aside in an interest-bearing savings account. Then you have full control over the money and can re-purpose those funds.
This strategy will work in your favor more often than it won't. Consider setting aside about half of the cost of the item you bought.