Our land line stopped working but Plusnet seem to have closed most of their contact methods as well which surprised me. I would have thought remote working would have been a key part of any business continuity plan for a call centre.
Our work one is able to operate at about 50% capacity remotely after a bit of intensive planning although unfortunately in the current situation probably needs to be about 150%. It an internal one though so different commercial drivers.
To give you an example of the position of the (outsourced) callcentre we use, it has 600 seats (approx. 300 are "ours"), on Wednesday, 370 staff were absent either through illness, self isolation or childcare needs. Even with that reduction, it wasn't possible to create enough space between them all to maintain social distancing, and had it not closed, the staff Trade Union would have led its members out of the door on safety grounds.
Our offshore call centre in India was completely shut down
Hundreds of suitably secure laptops and/or connections may provide some remote capability assuming that all those people have broadband access and a suitable environment but any less than that would just result in a few people being overwhelmed, and mass remote working simply isn't how call centres operate.
We have managers on call remotely for any real emergencies, but in common with a lot of other organisations (And more all the time), that's pretty much it.