Hi Ringinglady,
Thanks for your post and welcome to the community.
I'm sorry you're having problems with your landline, I'd like to help you.
Can you confirm if you get a dial tone please?
Do you notice the crackly line when you first pick up the handset or is it after a while when you're on a call?
Apart from being crackly, are you able to make/receive calls?
Can you call your landline from a mobile number?
Sorry for so many questions, I'd just like to understand what's happening fully.
Thanks
Melissa