Originally, the down payment was strictly prohibited by the government, so the sales department violated the rules. Secondly, from your point of view, the sales department is at fault and should return the down payment.
1. If the contract is invalid or misunderstood, the owner can ask for a refund of the deposit. However, if the decoration company has no major fault or fraud, the deposit will not be refunded, and it will be handled in accordance with the liability clause of the contract. However, according to the contract law, the agreed deposit cannot exceed 20% of the contract amount, and the excess is invalid.
2. Intention money paid at the time of signing the contract, called "down payment", only represents a choice tendency, and most of the down payment can be refunded. But once the deposit is paid, it means that the consumer has chosen the enterprise. As a deposit, it will generally become a part of the advance payment.