My cheek filler is expanding, what can I do?

Hi. I had filler in my cheeks (high part and the balls) about 3 years ago and it's like it keeps growing and growing, my face looks distorted and my cheeks look massive. It hasn't dissolved over time like it's meant too, it's expanding. I want to dissolve it but I am so scared of having a reaction to it, or one side working and the other not. Also worried about destroying my own collagen etc. help! I look weird