I would suggest extending your diligence period until all repairs are made so that you can confirm they been done to your satisfaction. If the vandalism occurred after you had the home inspected I would request that the seller pay for a re-inspection.
You should be directing all of your questions to your buyer broker (I hope you have one and are not permitting the listing agent to be a dual agent)
If the seller doesn't agree to extend the diligence period then my advice is to terminate the offer immediately and get your earnest money returned. The date diligence ends is listed on the 2nd page of your Offer to Purchase and Contract near the bottom. Diligence expires at 5PM on the date listed.... more