Re: Frequent disconnections
Sorry to see that there's an issue. I've tested your line and we're not seeing any obvious issues being flagged up on broadband diagnostics or tests against the phone line.
Can you try following the checks here next please just so we can rule out any obvious causes: https://www.plus.net/help/phone/phone-line-troubleshooting/
Do let us know how you get on so we can follow things up with you.