Restylane is a great product but if placed incorrectly can be dissolved with Hyaluronidase. It can take several treatments to dissolve the Restyalne so I suggest you return to have it removed. I prefer Belotero under the eyes because it is a thinner hyaluronic acid product and gives generally better results under the eyes. It is important to go to a board certified dermatologist for injections for the best cosmetic result.
Our modern hyaluronic acid fillers are very concentrated and cross linked, therefore it may take more hyaluronidase to dissolve it. The other option is if your body has formed some collagen around the filler, injecting a steroid into it may help to dissolve it.