Voltage on my coax

There is AC voltage on my coax cable. I live in a condominium complex and my upstairs neighbors are experiencing arcing and damage to their carpet and equipment through their coax cable multiple people have been shocked and I’ve measured voltage on my cable as well. This is a serious issue and I need a tech out here immediately. I have an appointment for Thursday of this coming week but that is not soon enough. It need to happen ASAP!! This can hurt someone or cause a fire and Comcast needs to take this seriously!!!