I'm not clear if the phone was fixed or not. You say the line fault was repaired but that you are still without phone (and effective broadband I realise).
Very slow broadband and no dial tone is nearly always one wire of the pair is disconnected, somewhere between (and including) your phone socket and the exchange kit.
The indispensable man or woman passes from the scene, and what happens next is more or less the same thing as was happening before.
My broadband basic info/help site - www.robertos.me.uk.
Domains, site and mail hosting - Tsohost
Connection - AAISP Home::1 80/20. Sync 59997/15142kbps @ 600m. - BQM