The Mid-Autumn Festival event has expired, and the transaction bonus at that time will still be deducted

From August 25th to October 26th this year, I made a deposit on this platform and participated in the activity of completing 40 transactions to get 200 US dollars. Later, I did not complete the transaction number, and my trading account was liquidated! Before making another gold transaction in the early hours of December 15th, I asked Tomchen, the customer service of the acy platform, to find out in detail whether the deposit will be deducted. I was deducted the bonus, I have found the platform customer service and account manager to communicate related matters! Attached are screenshots of the chat. They also agreed to return it at the beginning. Until today, the customer service manager said that only by depositing a part of the gold and completing the transaction lot can you get the bonus. Yes, I didn’t take out any money. Now that the activity has expired, why should I deduct the transaction bonus at that time?