Residential Sales Contract Inspection Repair Amendment - - Does a buyer have recourse against a seller for improper repairs prior to closing?

I purchased a home in April, and prior to closing had a home inspection. The inspection revealed an out of date fuse box; on the repair addendum I requested that the fuse box be addressed. The addendum states that the repairs must be done by a licensed or qualified contractor. Seller replaced fuse box with a 100amp panel, but after having many electrical issues I''ve discovered that it was shoddily replaced, and the service was never upgraded. The issue is that the contract required a licensed or qualified contractor - I''ve discovered that this was not the case. City ordinance requires a licensed contractor to perform work on non-owner occupied property, which this was, and also requires a permit for work of this magnitude. Since the seller violated city ordinance and the repair amendment to the sales contract, to I have any recourse to remedy the improper repair?