First,have your agent review the contract with you. Find the section that deals specifically with what the seller agreed to be responsible for regarding repairs. Then you have a starting base with which to discuss with the sellers.
Second: The items shown to seller during the walk through - - did you have your agent list those specifics and what remedies were expected by close on an addendum to the contract and have it agreed to and signed by all parties?? This is important. If not, then it may come down to a "he said/she said" and now we're getting messy,,,
Third: If you answered yes to the above, and the work was not completed, you need to
a) determine if the work is still being done and the time needs to be extended due to the schedule of the workers doing the repairs;
b) if necessary, your agent can request to have the title company escrow the cost of repairs from the seller proceeds until the work is completed. At that time the title company would release the proper amount of funds to the vendors directly. Any leftover funds would be returned to the seller as part of their final amount due ((if they were due funds at close).
Finally, TALK TO YOUR AGENT! They're there to help in matters like this. That's their job... They'll know if it is a minor or major setback and should be able to handle the situation properly. If they are not sure what to do, request that their broker become involved. If that fails, then you should seek the advice of a competent real estate attorney.
Hope this helps,,
Tina Evans Principal Broker