Photos would be very important here for more precisely addressing your problem. However, it sounds as though, by concentrating on leaving you with a high cheekbone appearance within the upper sides of your mid face, your injector left the mid-face region below and more centrally appearing disproportionately thinner and volume depleted. If this is the case, a nonsurgical mid-face rejuvenation to volumize the latter area will restore more overall balance to your face. Your question, however, raises a couple of important issues. One is that working with fillers to shape and contour the face is real art and is not simply a matter of measuring the amount of a syringe you inject, the way it would be for an injection of penicillin in the the arm or buttocks. An experienced aesthetic injector knows in advance not only which material(s) are best to get the entire job done right, but precisely where to inject the product(s) to get the desired effects, as well as how much of each would be necessary to do so. And all of this should be communicated to the individual PRIOR to treatment to avoid unnecessary concern or disappointment, and a treatment plan (such as whether all is performed in one session or scheduled in stages) established during consultation in accordance with the patient's goals and budget. I suspect that had this been done in your case, it is unlikely that you would be disappointed at this point and needing to query the RealSelf.com doctors for answers. Going forward, make sure that you vet your doctors thoroughly. Look for a board certified aesthetic core physician and make certain to ask to see his/her before and after photos before agreeing to proceed. Best of luck.