I've sued several businesses and individuals in small claims court (in California) including two multinationals on the S&P 500. I have no formal legal training, only what every open source dev learns through licensing. The court bureaucracy was about as hard for me to learn than learning how to convert an out of state drivers license to my new state. Finding a process server was the hardest part. You write your account of what happened in colloquial English, you attach evidence, you show up before a judge and they decide.

You don't actually need a lawyer to respond to bogus charges. Legal trolls make their money assuming most people settle or don't show up. Just submit your evidence, show up in court, and if it is bogus, it will be clear.