Suddenlink Communications Selling false MBPS Speeds for extra money per month and not providing the MBPS Aubrey Texas

Originally had 10 MBPS thru Suddenlink, then upped to 30 MBPS but couldn't achieve it thru Speedtest, finally after back and forth, they realized I had the wrong Modem for 30 MBPS...went and spent another $120 bucks for a second Modem...so a few months later they call me up out of the blue and offer 50 MBPS for another $10 a month...initially running speedtest for a few days no problem 50 MBPS, then the weekend came...7-12 MPBPS that's it...while paying for 50 MBPS...thanks, but no thanks Suddenlink you are a RIPOFF company...