Ron Burley has put together Consumer Guide: Fighting Back with excellent guidance to help yourself against the companies who refuses to help you with the problem that they have caused you.
Sometimes you need to be a bully to get what you deserve
Rather then me summarize what's been already said by Ron, here is the quote of seven items that he iterates.
1. KNOW WHEN TO FIGHT
Your time is money. Resolving a business dispute should never cost more than what the bungled product or the service is worth.
2. THINK LIKE A BUSINESS
Appeal to the company's bottom line by making clear that it will cost more to ignore you than to give you what you want.
3. CHANNEL DIRTY HARRY
If speaking up makes you nervous, write yourself a script of what you will say to the unscrupulous business.
4. DON'T FEAR GOLIATH
If you're getting nowhere with customer service, call Investor Relations or the Sales Department. Both are trained to make happy customers, rather than just make them go away.
5. MAKE NICE WITH THE LITTLE GUY
When on the phone, get every representative's full name, agent number, and call-center location. Don't believe lines like "I'm the only Mike here."
6. GETTING WHAT YOU WANT
If you shout or swear, the biz has an excuse to label you a "problem customer" and not take you seriously.
7. PROTECT YOURSELF
Your credit card company can be your best friend. Ask for a charge to be put "on hold" to give you additional leverage when dealing with a problem company.
Also, don't forget to visit AARP site for full details.