With all respect, it would depend on the definition of “dropped”. There are busy signals where, because there is a limit to the technology and the number of calls, or how long the system knows an average call will take for somebody to be placed on hold, it gives them a busy signal, so they don't even get in. If we don't include those types of calls, for calls that entered the system and then were routed through, I'm not aware of any dropped calls in the last number of days.
On May 25th, 2020. See this statement in context.