Is permanent bruising possible after injecting Aquamid? What can be done to fix it?

I'm 28 and a year ago I've had a facial filler injected (Aquamid) to add the volume to my cheekbone area. After a procedure a severe bruising occurred but I've been told that it is normal and that it will go away in several weeks. A year after, bruising is quite visible. I've talked to my doctor and he said that it is the first time that it happened to someone. He even tried to inject my own fat into this area to mask it, but it had no effect. I'm really worried that it will never go away.

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