Customer service reps are incompetent liars

I was a customer for 18 years and cancelled last month. It started with a phone call to see what I could do about the increase in my bill. I spoke to someone who seemed very nice and said they could change my plan which would make my bill cheaper each month. I agreed to a cheaper bill each month. I received an email after the call with the changes which was actually a large increase in my monthly bill. Thst was not what I agreeed to. I called customer service the following day and spoke to a different rep on the loyalty team who said the previous rep removed a discount I had and nothing could be done to get it back. They also said there were no discounts to make my bill even close to the same amount that I had paid monthly over the previous year. I then requested to cancel the service. The rep confirned what my final payment would be. That payment happened and my service ended several weeks ago. Now all of a sudden directv sent me another bill for additional charges for my plan! I didn't even want to cancel my service. It's the incompetent workers who tell lies that forced me to cut the cord. I can't imagine directv will be around much longer treating loyal customers this way. Very disappointed.