If you have time, Bobbie lead them on. I've let them believe I'm a dotty old dear who can't hear too well.
When they told me they could fix my computer I changed computer to cooker and had a long conversation about how clever I thought them to know my cooker was broken and that they could fix it remotely was just amazing.
I sometimes pretend I've got a crossed line with them and my brother. When they speak to me I answer as if I'm discussing with brother my mother's corns and the treatment he should be giving her for them. When I changed corns to haemorrhoids they hung up.
I know...I know....but lockdown was long in Ireland..... :-)