I moved into my flat a year ago my landline was a bit crackly at times then but I didn't think much of it. It has recently gotten much worse and is now nearly impossible to hear the person on the phone now. Ive looked on here and I called the test line and only get crackle. But I don't have another phone to test it. Any help would be appreciated I don't want to risk a large charge for call out if there's something I can do.