Hello,
1) Tell the agent he needs to do whatever it takes to get the work done in a week's time. If he fails to do file a police complaint against him.
2) Send legal notice to the agent and the seller asking then to take appropriate steps to rectify the mistake and get the registration dinner in your name in the stipulated time.
3) The fact is that a new application can be moved with the right signature of the owner(seller). If your agent is not doing it get someone else to do it and take the offending agent to the police.