how to handle call disconnection while call is on hold (queued) - twilio

Question

I am following this approach to work on hold and resume of a call from the virtual caller's end. It works but I am facing two more issues. FYI, the setup is exactly same.
First:
The first round of Hold, Resume works perfectly. On Hold, I pass the CallSid, then I apply the <Enqueue> TwiMl to the child calls (only one would be here in my case).
client.calls.list({ parentCallSid: callId }).then(calls => {
calls.forEach(call => {
call
.update({ twiml: '<Response><Enqueue>ADMIN_ID</Enqueue></Response>' });
});
});
And on Resume, I update the Sid of the Caller to Dial again from the queue
client
.calls(callId)
.update({ twiml: '<Response><Dial action="/holding"><Queue>ADMIN_ID</Queue></Dial></Response>' })
It works perfectly foe the first round. When I hit the hold for the second time, it says We are sorry, some application error occurred. Good Bye! at the caller end and disconnects. At the receiver end, it goes to playing hold music. What am I doing wrong?
Second:
I see that setting action in the <Dial> keeps it alive and repeats the action TwiMl in my case. But in a normal scenario without any hold, if the receiver disconnects, I as the caller keeps hearing the action repeatably and the call doesn't hang up. Also while on hold, if the caller or callee hangs up the other one just keeps stuck in the current state. Is there any way to fix this with the above setup?

Answer 1

Fixed the issue by using REST API checks for status of the calls.
client.calls.list({ parentCallSid: callId }).then(calls => {
calls.forEach(call => {
if (call.status !== 'in-progress') {
client
.calls(callId)
.update({ status: 'completed' })
}
});
});
F.e. the above code checks if the parent Sid (virtual caller) is disconnected and in that case it disconnects the child call.