Answer:
Hi
The answers are b) and c)
Step-by-step explanation:
The letter of complaint is used to file a complaint or a claim about a product or service that has left us unsatisfied or does not correspond to the price as previously agreed. To make this type of letter you need to sort the ideas. This type of correspondence must be clear and concise. It should be clear to avoid useless preambles and explanations at all times and should go directly to the statement of the reason for the claim. Hints and allusions can only lead to confusion, as the recipient has to decipher what is so unclear in the complaint letter.