I understand your frustration OP, but instead of cursing the darkness, suggest to light a candle. No more phone calls. No more emails. Instead suggest to write a one page, one sided, double spaced, easy to understand letter directly to the CEO of the company. Keep to the basic facts and how they have adversely affected you. Avoid any personal insults, implied threats, etc. Be polite in other words. Sign your name and provide a return address at the bottom of the page. Brevity is of utmost importance. Leave out unimportant details; just focus on the one or two most important issues you have experienced with the company's service.
For the cost of a stamp, you'll probably get the CEO to spend 10 minutes of their time to read it. Personal letters to the CEO almost always get read, at the very least by the CEO's admin assistant. And usually it will be forwarded to the CEO, as long as the letter is informative, pertinent, short, and polite. Not saying the CEO will do anything about it, but at least you've flagged the two problems most important to you and made the CEO spend some of their time on your problem.
Don't bother sending an email. Snail mail only. You can find the CEO's snail mail address on the company's web page usually. Click on "about us" or something like that.