I've given up on Dynotech.
Too bad it has come to this sought of business motto these days.
If you can not at least in a timely manner get back to a paying customer to mention overloaded work conditions, no supplies, no shipments, no whatever, then that's a call for an exit stage left on the customers side.
Radio silence whether it be via phone contact, E-mail, text goes along the saying of: A business with no sign, is a sign of no business"