On the one hand, you should consult a lawyer immediately to see if there is any possibility of property preservation before litigation. If not, I suggest you don't go to court. If you don't get the money back, you'll have to pay the lawyer's fees and legal fees.
On the other hand, it is also the key. You need to know what the couple are doing now. What does their family do? If possible, the bride's family should also inquire about it. Find their weakness, touch their key, even if there is no note, you can get your money back!
At the same time, I saw what should I do if I meet Lao Lai? I'll give you some advice. "