Silent calls from Test & Trace?

[ColettesEarrings]

My son tested positive on a pcr on weds. I've had three calls today from the T&T number this morning, all of which have been silent when I've answered. No hold music, no 'you are in a queue' etc. It's not my end as I've had other inbound calls today from multiple sources. I'm happy to speak to them and have picked up the call every time but it's quite irritating! (and silent calls are actually an offence!) Anyone else experienced this? Did they answer promptly eventually?

This happened 2 weeks ago when my son tested positive. I'd answer and say hello multiple times and no one was there.
The local council then contacted me about test and trace cos apparently I hadn't answered the NHS calls which wasn't true.
Anyways the local council just asked who he'd be in contact with and that was it all sorted.

I’ve had answerphone messages where it’s just music for 45 seconds. Maybe they think I need cheering up.

I’ve just had a call and answered to someone heavy breathing down the line but saying nothing. I could hear my voice echoing as I said hello so am pretty sure they could hear me. I’ve double checked the number but it’s made me feel a bit unsettled 🥴