Well, depends what you were ablated for. An ablation for SVT, for example, is not going to fix PVC's.
That said it doesn't necessarily have to be one or the other. Anxiety aggravates PVC's and PAC's.
I was in the hospital for afib a couple of years ago. The day I came home before I could even take a shower, my heart rate was up to 130. I freaked out, went back to the ER, and it was just sinus tachycardia from stress. As soon as I found out it wasn't afib or SVT, it went back to normal.