You can check this number to see if it is a local agent or an AutoCAD employee.
If AutoCAD company wants to protect its own rights and interests, the object of purchasing genuine software is a very large company, and it is to contact the company directly, not the user of the software.
If you need to defend your rights, you will usually receive a letter from a lawyer. Legal affairs are usually handled by professional lawyers.
But it is illegal to use pirated software, and it is more correct to download genuine software.
Extended data:
Precautions:
Penalties for using pirated software:
According to the provisions of Article 24 of the Regulations on the Protection of Computer Software, in addition to the provisions of the Copyright Law of People's Republic of China (PRC) or other laws and administrative regulations, if one of the following infringements is committed without the permission of the software copyright owner, the infringement shall be stopped, the influence shall be eliminated, and civil liability for apology and compensation for losses shall be borne according to the circumstances.
If the public interest is infringed, the copyright administrative department shall order it to stop the infringement, confiscate the illegal income, confiscate or destroy the infringing copy, and may also impose a fine. If the circumstances are serious, the copyright administrative department may confiscate the materials, tools and equipment mainly used for making infringing copies.
Anyone who violates the criminal law shall be investigated for criminal responsibility in accordance with the provisions of the Criminal Law on the crime of infringing copyright or selling infringing copies:
(1) Copying a part of the software or part of the works of the copyright owner.
(2) distributing, renting or disseminating the software of the copyright owner to the public through the information network.
(3) The technical measures taken to intentionally evade or destroy the copyright and artificially protect the software copyright.
(4) Deliberately deleting or changing the electronic information of software rights management.
(5) Transferring or licensing others to exercise the software copyright of the copyright owner.