What should I do as they have ruined my body and how long should I wait to get surgery again to fix my BBL?

i recently got a BBL in turkey. When i got back to the UK i got rushed into hospital with suspected septicemia and had my hip cut open and the fat taken out due to infection. i am now left with a large open wound on my hip and have to have it drained and packed daily for 6 weeks. The company that i went though have admitted liability and told me they would refund my money 3 weeks ago. I still haven't received any thing back and are now ignoring all my messages.