Unethical Business Practice

AT&T, I want to know since when is it ethical business practice to have a technician come out and splice an active internet line and make it inactive in order to run a new line for another new customer? I woke up Sunday morning to have no internet connection from my AT&T router, I tried to reboot it by unplugging with no success, so I called customer service in which they ran a test and determined there was a issue from outside and scheduled a technician to come out the following day. After I setup the appointment I noticed two AT&T techs near my condo digging in the ground, I assumed they were working on an issue and that’s why I lost internet well I came home that evening, still no internet. Fast forward to my appointment today...my technician informs me that he found the cause of the issue and it was that one of your technicians spliced my line and used it to install a new line for another customer at a different condo, knowingly. This is absolutely unacceptable, I could tell from the behavior of the tech who informed me this was a huge breach of business practice, because he kept saying how wrong it was and how he couldn’t believe they knowingly did being that there are VIN numbers on the lines. On top of that this tech’s manager said he couldn’t fix the situation because he didn’t want to cause problems with the other technicians who messed it up. So I still have no internet as we speak. AT&T, you better believe if you don’t insist on making this right I will be fighting this, I promise. I have been with you guys for years now and currently have two wireless accounts and my internet account which is proving to be worthless right now thanks to one of you technicians! Feel free to pull up my account, the technician informed me he would be flagging my account to make it aware that our line had been manipulated by one of your other agents.