Do i have a lawsuit

You have a suit if you file one. Lawsuits are costly, however, and I suspect you'll find it tough to obtain representation on a contingency basis....

Check to make sure eBay's terms don't include a mandatory arbitration provision.

Read this statute or have an attorney interpret if for you. http://www.moga.mo.gov/mostatutes/chapters/chapText441.html

What can I do if we bought a house and the homeowners agreed to fix the roof and never did, and they signed an addendum?

Contact a local real estate attorney and look into suing under the Merchandising Practices Act in addition for breach of contract.

How can I recover from a breached maintenance contract?

You have a contract dispute so go hire a client tract attorney.

What steps to take with a landlord who collaborating with prior landlord to cause harm upon current apartment?

I doubt that speaking to the mayor will be helpful but you are free to try

Someone found my laptop but do not return?

Anyone can sue anyone for anything. Check whether an abandoned property statute applies. If not, good luck.

How do I stop magazine offers made through publishing house clearance ?

Make sure you didn't provide your credit card number and monitor your statements.

If you were to sue for defamation you'd need to prove that your neighbor made a false statement of fact about you and that you were consequently...

An attorney with litigation and co tract experience. Or a "consumer law" attorney.