Try the following methods:

1. Negotiate with the 4S store to solve the problem: First contact the 4S store to negotiate and solve the problem. If the 4S store can handle the matter, you can try to let it go. Apply for a loan at the 4S store, or negotiate other solutions.

2. Complain to the consumer association: If negotiation with the 4S store fails, you can complain to the local consumer association and provide relevant evidence.

3. Complain to relevant departments: If the consumer association cannot solve the problem, you can complain to the local market supervision and management department and ask it to investigate and handle the matter.