1. Keep all previous package numbers and their phone numbers. You'd better call them again, record what they promised you, or exaggerate the product with your mobile phone. Then dial 123 15.
2. It is to report journalists and use public opinion to force them to deal with it.
At present, this is the only way. More than 20,000 yuan is not a little bit. However, throwing cold water on you may not be effective, because you are not the only one who has been cheated, and you are not necessarily the one who has been cheated the most. The other party must have thought of this result long ago. Don't get your hopes up. Just like some old people spent hundreds of thousands of dollars to buy a room full of health care products, they are going to retire, and they can't find any shortcomings for others. They are all verbal promises and there is no evidence. . .
Finally, I advise you to have friends and family around you. You must not believe the advertisements on TV. Remember not to 100% believe!