Seller told me had fixed gas leak but didn't

[Tyler Woolums]

Back in January of 2024 I purchased my first home. Upon inspection it was made clear there was a sizeable gas leak. I decided I liked the property enough but obviously wanted to get the leak fixed. I told the buyer as long as the gas leak was fixed, I would purchase the house. A week or so later my agent contacted me to inform me the repairs had been made and we were on track to close. During the closing of the house I asked the seller "so what was wrong with the gas leak?". They started to reply "oh it was just..." but were cut off by someone walking in the room handing us both paperwork. fast forward to present day and I have been without gas and hot water for almost 1 month. I just found out moments ago that the fittings were wrapped in electrical tape and apparently not up to code. They are re building a few different components but I am to pay for a sizeable hole put in our wall to access the leak and the materials needed to patch. 

for clarification, the house had a gas stove which was replaced with an electrical stove. It is under the plumbers assumption they did not properly cap off the gas lines when replacing the stove. 

The leak was documented on the inspection report along with my closing offer contingent on the repair being made prior to closing. I was never given any receipt or proof of repair.. just told "it's taken care of"

What are my options here? can I expect any financial reimbursement? should I pursue legal course? This seems to be grossly negligent..