Non-specific statements annoy me, get them to tell you what cables were damaged.
And "fixed it" tells you nothing - did they put in a new harness or did they just insulate the damaged areas? Did they splice in replacement wires?

The poor training the industry provides for these "technicians" when it comes to electrical problems make it very hard for "technicians" to fix any electrical problem in the car. And yours certainly sounds like electrical problems.

The ABS light can come on due to a weak battery or corroded battery terminals or cables. In fact, a whole LOT of issues can be caused by bad batteries or bad connections to the battery.