There might be many chances when you purchase something online or from a store but later you find out some sort of faults in it. You better inform the manufacturer or the retailer about the dissatisfaction you have experienced after buying their product. You can always compose an email to register your complaint to the manufacturer.
Begin the opening paragraph of your email with telling the manufacturer which of his/her product you have bought or what services you had acquired from him/her in the recent past.
Explain the actual problem to the recipient and provide him all the details. You can also suggest some possible solutions to the problem, including replacement or repairs. If you are complaining about any services you acquired from a professional, ask him to re-perform his/her work.
Conclude your email’s last paragraph by urging the recipient to act promptly to your email and update you on this matter at the earliest.