Called to have 3 coolers turned on for the season....

Called to have 3 coolers turned on for the season. Was told they would call the next day to schedule. Never called just showed up and claimed I owed almost $1200 for the job. No major repairs were done and this seemed absurd. Eventually they admitted one of the 2 employees on this job wasn't a tech but a helper who wasn't needed so they cut him off the bill (although they had no issue originally billing me for both at full technician rates) they also claimed to have completed the job and tested everything. Heaters were never turned off, one cooler had pads put in wrong and one wasn't even plugged in, yet everything was tested and in working order. When I called and complained I was called a liar and treated so unprofessional. I will never use TLC again