Job left incomplete, lines very low

Quite awhile ago the concrete poles were replaced with wooden on our street. When it came time to move the Telus lines to the new pole the installers got their truck stuck and never completed the job. We were told this was temporary, that lines being ted off to a nearby tree was a permanent solution...years passed.

We've had issues with trucks getting into our driveway, the line was less than 3 meters above. Telus came out, agreed there was a problem and said they'd fix it. The "fix" has been to tie the line to yet another tree (seriously). In doing so it's raised the line above our driveway but now the line to our house is slack and droops far enough that I can reach up and touch it. 

Any advice how to get this resolved quickly? I'm not a Telus customer.