I changed broadband (and therefore landline) providers last week but I haven't been able to hear an incoming call ring on any of the handsets since then. I installed the new provider's microfilters on the telephone sockets in place of those I'd been sent by Plusnet in the past. All the handsets are properly connected and safely on the hook.
Friends and tradesmen who've tried to call me at home have told me about their unsuccessful calls but the changeover seems to have stopped incoming landline calls from ringing properly in the house. At most, there's once or twice been a very tiny single beep - which isn't audible unless I'm right beside a handset.
Does anyone have any ideas about what might be going wrong here and how I can cure this problem, please?