Why did you receive a text message saying that you would deduct 1000 yuan?

It should be fraud. Suggest calling the police. This is not a penalty.

A loan contract refers to a contract in which the parties agree that one party will transfer the ownership of a certain kind and quantity of currency to the other party, and the other party will return the similar kind and quantity of currency within a certain period of time. When a loan contract is breached, if the breaching party fails to perform its contractual obligations or does not conform to the agreement, and after performing its obligations or taking remedial measures, the other party has other losses, it shall compensate for the losses. In case of breach of contract, you can take self-help measures to safeguard your own interests, seek judicial relief, investigate the other party's liability for breach of contract or wait for the other party to perform.

Related knowledge of liquidated damages: liquidated damages refer to the money that should be paid to the other party when one party breaches the contract according to the agreement of the parties or the direct provisions of the law. The subject matter of liquidated damages is money, but the parties may also agree that the subject matter of liquidated damages is other property than money. Liquidated damages can guarantee the performance of debts, punish the defaulter and compensate the losses of the innocent party. Therefore, some countries regard it as one of the measures to guarantee the contract, and some countries regard it as a way to bear the responsibility for breach of contract.