need help not getting it

I signed a new contract ONE MONTH AGO. my bill does not reflect the new contract rate, nor have i received the promised call to set up the service upgrade. the chat button on the website isn't working, no surprise, the website is often glitchy, and I can't even check voicemail on the app without going on the website and changing settings.  so much for an app being convenient.  Despite the statement on the website that "call us, our representatives are available 24/7," the recording told me to call back during business hours.   I have emailed the representative who helped me with the contract several times, crickets. 

And then the slap in the face - the ad i saw recently for less than $70 monthly business internet, I'm paying $170 per month, and the only other service we have is a landline - does that cost $100 a month?  Not to mention that I had to call to ask for a new contract, why wouldn't you take care of your business customers by facilitating this when the contract is due to expire?  If I don't receive help soon I will be taking my business elsewhere, totally fed up.