I have been with Verizon 29 years and they are driving me away with their bad customer service

I bought a new iPad Air and called Verizon to change my iPad cellular service from the old iPad to the new one. By the time they got done “helping me” that told me I qualified for a free phone at absolutely no charge, never switched my iPad cellular service to the new iPad, but added two now lines I never wanted and did not ask for, and added almost $200 in charges and fees to my Bill. After two months, I am still fighting with them.I started fighting with them when I received the July Bill for June Service and I have been fighting ever since.
I spoke with one individual who seemed really helpful and was working toward resolution. She was supposed to call me for follow up on August 28 and follow up. But what happened was the correction she requested was denied and she never called me for follow up.
The balance due on my bill remains $175 which as all soft costs and set up fees for things I never requested. I have been on the phone for almost 5 hours total. Since this started.
There doesn’t seem to be an end in sight, unless I switch carriers.