Sorry to hear that. I have looked into your connection and it is fairly stable. Issues may be down to capability of this line as you are on ADSL connection with estimated speeds of 1,5Mbps-4Mbps.
Unfortunately we are not your landline provider so I am unable to test/report fault on your landline/copper line but broadband part of connection is not showing any external faults.
During testing I've found that there is indicator of possible REIN issue within your home.
Can you please confirm if Own Domain Checks were completed as per this guide?
Once this will be completed, please add comment on already opened fault ticket on your account here