We only pay for the broadband charges via Orange and not the phone line - they used to both be about 25 euros a month until I found out you don’t have to pay the line rental part which offers the telephone calls only - but it turns out you can either pay for the line rental and/or broadband - it seems odd I know but we now just pay for the broadband part and it works fine.
I used to have orange enable/disable the line whenever we were there - but after the above step effectively halved the cost I stopped disabling it.