How to get AT&T to lower my bill?

I'm with att for almost 4 years. I have 4 iphones with them. I went in to a sprint store ant they can lower my bill with about 100$ a month and give me unlimited. Now I don't want to leave att but if they don't lower my price I will.
How do I get att to lower the price?
I tried changing my plan with att but I didn't help. I use a bunch of data.

Cell phone rates aren't negotiable, the only way to lower your monthly bill is to reduce your plan minutes/data.

Tell them what their competitors are charging for the same services.

Keep in mind, most "unlimited" plans are not truly unlimited. After a certain amount of usage, the company will often shut off your service or at least slow down how much data can be transmitted. As for getting a company to lower your rate, I'm not sure you can, but switching is a risk, especially if you are happy with your service as it is now.

  • Will the price get lower for iPhones 5c? Will the price for the iPhone 5c get lower for used phones when the iphone. 6 releases. If so how much would it cost for the used iPhone 5c and how much would it cost for new iphone 5c
  • My ethernet connection is lower than my Wi-Fi? I have a HP pavilion dv6000 and recently i bought a new internet plan of max speed of 120Mbps but when i connect the ethernet cable from my modem the speed is (speedtest.net) around 5 mb also on Wi-Fi i get 20 mbs. I tested the Wi-Fi speed on my iPhone 4 s and i got around 60 mbs. I'm running windows 8 Pro. The modem is Technicolor TC7200
  • In black Friday will the IPhone 5 price go lower? I feel like getting the IPhone 5 now but black Friday is near but i don't know if the price will be less?
  • I pulled a muscle in my lower arm? I played racquetball for a while, and a few minutes afterwards my lower arm started to hurt. It's my right arm and is mostly on the left side. It hurts even just typing like this on my iPhone. I think I pulled a muscle, so why are some things besides ibuprofen I could do to maybe help with the pain?