Burnt my dad 2nd degree and refuses to take responsibility

I’m contracted to a third party, which is in business with Vuvu Luxury beauty, I am hoping after this review the owner will come to an amicable resolution, as I do have a few suggestions. In winter of 2023 I sent my dad and mom for a massage under a package I have, prior to the massage I contacted Vuvu Luxury Beauty to make arrangements for him, stating when he comes for visitation’s or treatment’s he has Neuropathy caused by diabetes, before the Incident I asked them for heated blankets, due to the cemented area they were doing massage’s in was ice cold and I contacted the people, I’m in contract with which they are in partnership/arrangement with as well. They serviced me once after that at Vuvu Luxury Beauty with a hot water bottle and I burnt then brought it to there attention. After my incident my mom and dad went in for a treatment and my mom asked for a glass of water and a hot water bottle, they brought her the water and put the hot water under my dads feet, which we weren’t aware of because he couldn’t feel, a few days later he kept crying in pain, and when , I checked his feet he had a massive blister, formed underneath his foot. We rushed him to the hospital, they did a micro surgery and cut/scales into his foot to try and save the tissue, the doctor wrote a report and I took photos, I contacted Vuvu and the company my contract is with sent the photo’s and the doctors report 3rd and 19th September 2025 due to there blatant negligence, my dad is still suffering and we spent a lot of money to date. Driving to and from hospital’s etc. I asked if they couldn’t reimburse our petrol as it’s been a strain, they are pensioners but I kept getting a negative responses from them, the owner contacted me and responded with I should then take them to court.