I had ~ 14000 a day for years. Still hiked, xc ski, backpacked. Got rid of them with taurine, l-carnitine, l-arginine (500 mg each/day), 2 weeks to see improvement, gone in 4 weeks.
If they destroy your quality of life I hope they ablate them.
Every time I hear a case like this I feel the argument to just burn everything just gets stronger...
The more you want to get rid of them, the harder it is to. Very similar to hiccups in that fashion. The medical community knows neither what causes PAC/PVC nor a cure. While some are no doubt physiological, there is a strong mental component to PAC/PVC.
The best advice is to let them happen and not worry about them. If they want to come every 30 seconds, then so be it. It won't kill you. Once you accept them as part of your life you will be over them.