I have a question... Bulldog-like sagging after chin surgery...

Hello.. I had surgery where they shaved both sides around the chin tip, not a V-line surgery on the chin tip area. It has been a month since the surgery.. and the skin is sagging, exactly like a bulldog. If it were cheek sagging from cheekbone surgery, I would understand. But I did not have cheekbone surgery.. my chin tip is sagging. A few days ago, I went to the hospital and talked with the doctor in charge. They asked if it had not been like this even before surgery, so I said it had never been like this. Even in the photos taken right before surgery, there was no area where the skin was stretched and sagging like a bulldog. I asked several times before surgery.,,, My face originally lacks elasticity and stretches like rubber-band skin.. (I even grabbed and pulled my skin with my hand to show them..) I asked if it might look saggy or loose after surgery... They said that since it was not cheekbone surgery, that would not happen at all... They said any sagging after surgery would only be something like developing a double chin, and in that case fat suction may be done, but in my case it was not a surgery that would cause sagging or anything like that. I asked over and over.. and they guaranteed it confidently, so I had the surgery. But.... now it has ended up sagging like this, like a bulldog. They told me to watch it for about another month.. and see how it progresses.. I was talking with the consultation manager.. and what the manager said was... Originally lifting surgery costs 4 million won... but since I get 50% off, they would do it for 2 million won... I was really angry.. Why should I have to pay money for this surgery... The hospital was the one that said it was okay and there would be no problem regarding the things I had asked about repeatedly at first.. and the hospital was also the one that created this result afterward, so making the patient take responsibility makes me extremely angry. I also had revision nose surgery at the same time as the chin surgery. It was my third revision surgery.. When I first met with the doctor.. I asked them to keep the nasal bridge and height exactly the same as my existing nose, and only slightly raise the nasal tip. It was done with Gore-Tex and ear cartilage... After surgery..... they raised the glabella area. My eyes look close together. What the doctor said was.. I only put in a little, a little... I was dumbfounded. Then scar tissue suddenly started forming... I am taking Rizaben.. They never once told me about anything like this. I only want my chin to be properly returned to how it was before.. I am sorry to ask this kind of question... but in a case like this, shouldn't the hospital take responsibility??? Please reply..