This is not working.

I am not happy with this.

This is broken.

This is too slow.

This is too expensive.

This is too loud.

This is too small.

This is too big.

This is not clean.

This is not fresh.

This is not what I ordered.

This is not enough.

This is too much.

This is not safe.

This is not comfortable.

This is not fair.

This is not right.

This is not good.

This is not helpful.

This is not working properly.

I want to complain.

I want to return this.

I want a refund.

I want to speak to the manager.

I want to change this.

I want to cancel this.

I want to exchange this.

I want a replacement.

I want better service.

I want more information.

I want to give feedback.

I want to share my opinion.

I want to suggest something.

I want to thank you for your help.

I like this service.

I don't like this service.

I am satisfied.

I am not satisfied.

I am happy with the result.

I am not happy with the result.

Thank you for your help.

Thank you for your service.

Thank you for your support.

Thank you for your feedback.

Thank you for your suggestion.

Thank you for your recommendation.

Thank you for your advice.

Thank you for your opinion.

I am disappointed with the quality of this product.

I would like to file a formal complaint.

Could you please address this issue as soon as possible?

I am not satisfied with the service I received.

I expect a prompt resolution to this problem.

I would appreciate a replacement or refund.

This is not up to the standard I expected.

I am unhappy with the way my complaint was handled.

I would like to speak to someone in charge.

I am writing to express my dissatisfaction.

I hope you will take my feedback seriously.

I would like to suggest an improvement.

I am grateful for your quick response.

Thank you for resolving my issue promptly.

I appreciate your willingness to help.

I am pleased with the solution provided.

I am not pleased with the outcome.

I would like to recommend a change in your process.

I am impressed with your customer service.

I am not impressed with your customer service.

I would like to request a follow-up on my complaint.

I am thankful for your attention to this matter.

I would like to provide some constructive criticism.

I am satisfied with the way my issue was handled.

I am not satisfied with the way my issue was handled.

I would like to know what steps will be taken next.

I am looking forward to your response.

I would like to thank you for your assistance.

I am grateful for your support.

I would like to express my appreciation.

I am disappointed with the delay in service.

I would like to request better communication in the future.

I am not happy with the way my request was handled.

I would like to see an improvement in your service.

I am pleased with the improvement in your service.

I am not pleased with the improvement in your service.

I would like to request a written response.

I am thankful for your cooperation.

I would like to request a meeting to discuss this further.

I am grateful for your patience.

I would like to request a detailed explanation.

I am not satisfied with the explanation provided.

I would like to request a different solution.

I am pleased with the final outcome.

I am not pleased with the final outcome.

I would like to request a confirmation of receipt.

I am thankful for your understanding.

I would like to request a timeline for resolution.