Legal Question in Landlord & Tenant Law in California

That section applies to rental-purchase contracts. Are you in a rental-purchase contract?

You are reading it so wrong it is almost scary. Mr. Roach gave you a good hint why. Here's a better one: http://www.leginfo.ca.gov/cgi-bin/displaycode?section=civ&group=01001-02000&file=1812.620-1812.649

That's not to say, however, that late charges for one late payment of $2,200 is legal. It might or might not be; probably not..

Normally I charge $150 for even the most basic initial consultation for a problem like this, more if legal research is required or I do further legal work. You are so lost, however, and so far away, I'll offer you a special deal. Send me an email after you read the law at the link I pasted above. Show me you have the capability to understand why talking about section 1812.626 makes no sense in your situation. If you can do that, I will send you a couple of citations to resources that WILL apply to your situation and may support your position.

If, however, you can't figure out from the link I sent you why you are so totally far off base, then it would be a disservice to you to tell you anything other than "you need to talk to a local lawyer in person." Otherwise your landlord will win this dispute.