1--Albert Von Schweikert sold the company to Leif Swanson a few years ago, prior to his passing, Leif is a sharp guy. and i think Albert’s son Damon might still share in ownership.
2--many manufacturers do not answer phone calls these days. that is why they have dealers. to deal with customers who want to talk to someone.
3--or email them and allow them a few days to answer. or contact a Von Schweikert dealer near you. that’s who should answer the phone. i realize common sense is just not that common.....but....come on now. :-)