I'm sorry to hear about the landline not working as expected and for the dropping calls. I can certainly understand how frustrating it would be. We have different types of outages and not all are shown on the service checker however I can confirm that there was an outage and it was fixed after your last post on here.
Can I ask whether you're still experiencing dropped calls? Please let us know as I can't see any issues with the telephone data and seems like an engineer may be required to take a look.