You can call the police.
Lawyer's analysis
You can call the police, but the public security organs are mainly responsible for criminal cases and public security management.
Non-payment of goods is a civil debt dispute, which can be resolved through negotiation, litigation, arbitration and mediation.
If one party fails to perform the contractual obligations or fails to meet the contractual obligations, it shall be liable for breach of contract, such as continuing to perform, taking remedial measures or compensating for losses.
legal ground
Article 595 of the Civil Code
A sales contract is a contract in which the seller transfers the ownership of the subject matter to the buyer and the buyer pays the price.
Article 596
The contents of a sales contract generally include name, quantity, quality, price, time limit for performance, place and method of performance, packaging method, inspection standards and methods, settlement method, language used in the contract and its effectiveness.
Payment.