1. Check the rental contract: Although the start date and end date are not filled in, you should still check other terms and regulations of the contract. Check the clauses in the contract on deposit refund and early termination of the contract to understand your rights and obligations.
2. Communicate with the landlord: communicate with the landlord and explain your position and requirements. Remind them of the terms of the contract and emphasize that you should refund the deposit and rent according to the contract.
3. Seek legal advice: If the communication with the landlord does not solve the problem, you can consult local legal experts or housing lease arbitration institutions to understand your legal rights and feasible solutions. They can provide you with professional advice according to local leasing laws and regulations.
4. Prepare relevant evidence: collect evidence to support your claim, such as correspondence records with the landlord, rental contracts, payment receipts, etc. This evidence can be used to support your rights and interests when necessary.
Please note that the specific terms of the lease contract and local lease laws may have an important impact on your rights and interests. Therefore, it is best to consult local professional legal institutions or consultants to understand your specific situation and feasible solutions.