Hyaluronidase can help
Hyaluronidase can help remove Voluma. It may take repeated injections as Voluma is pretty thick to dissolve.
I'm sorry that you are upset about your recent injection experience. Voluma tends to require multiple rounds of injection to dissolve the product. After the injection you can try massaging the area to help the hyaluronidase infiltrate the region.
Deep injection of Voluma under muscle is relatively common, in my experience, so if you feel uncomfortable with your current injector, I would seek a second opinion from an experienced practitioner who may suggest an alternative approach. And keep in mind, that no matter what, the Voluma will eventually dissipate. Best wishes.
Voluma and Dissolving
Voluma is my favorite injection for the mid face. However, if someone injects it improperly it can be difficult to ascertain exactly where the product was injected in some cases. Perhaps you should consult an expert for a second opinion. Best, Dr. Green
Reversing Voluma with hyaluronidase
Juvederm Voluma is usually a deep (supraperiosteal) injection. It is also a very cohesive filler and one that I find somewhat resistant to hyaluronidase. That being said, it can still be reversed with hyaluronidase but will usually require a higher dose and possibly multiple treatment with the hyaluronidase. Some photos may help.