Needing Help

AT & T told me I needed a new modem.  I was not having any problems and had called with a billing question.  A worker came out and spent 2 ½ hours with the installation, new wires and all.  I discovered they had changed my network name and password.  Adjusted my computer and phone.  “No effect on the television,” he said before he departed.  Wrong.  I am unable to access Netflix, etc.  I went to settings and tried.  I could not find a password.

I called for aid.  I remain optimistic.