If you are unhappy with a product or service, Identify and review the three possible courses of actions with examples. 

If you're unhappy with product or service you can opt fpr possible 3 examples you can follow as given below.

Return to the Store or Website

You can solve many consumer problems by talking to a store employee, or if you bought the item online, by returning to the website. Do this as soon as possible because some retailers have time limits on returns and refunds.

Online retailers should provide return instructions on the site or on your receipt. When shopping online, it’s wise to consider the company’s reputation and return policy before you buy.

If the employee doesn’t have the authority to help you, ask for a supervisor or manager. With each person, calmly and accurately explain the problem and what you would like them to do. Keep a record of your conversations — who you spoke with and when, and what action they promised.

Use Social Media

Social media offers an alternative to filing a formal consumer complaint. Many companies have people to monitor posts and complaints about their service on social media pages. Your post will be most effective if you use a reasonable tone and explain the problem clearly. To avoid negative perceptions, the company may respond quickly to your problem. While there is no guarantee, it’s worth a try.

Write a Letter

If a call doesn’t work, use this,

Beclear and concise. Describe the item you bought and the problem, include serial or model numbers, and the name and location of the seller.

State exactly what you want done and how long you are willing to wait for a response. Be reasonable.

Don't write an angry, sarcastic, or threatening letter. The person reading your letter probably isn’t responsible for the problem, but may be very helpful in resolving it.

Include copies of relevant documents, like receipts, repair orders, and warranties. Keep the originals.

Provide your name, address, and phone numbers. If an account is involved, be sure to include the account number.

You may want to send your letter by certified mail and request a return receipt. You’ll have proof that the company got your letter and who signed for it.