Cox Communications Cox Cable Cox overcharges existing customers and increases prices!!!!! Phoenix Arizona

I have been continually calling Cox to have my internet lowered. I am always told “Ohh we can’t do anything because you’re under contract.” Every month the pricing on my contact continued to increase, even though I was supposedly “Locked into a contact price” I am currently on 300mbps internet, and paying $115/mo. For that. 

Online Cox is advertising $79/mo. For 500mbps internet. 

When I ask to have this same pricing I am told “Ohh that’s for new customers only” 

I have ave been a Cox customer for over 10yrs and I am tired of getting screwed over. I would like the same price as “New customers” 

i feel as an existing customer I should get a discount and even better pricing... not worse.