Exorbitant fees by Pinnicle Garage Motors

I had the worst experience with a company in years. Called Pinnacle Garage doors to check out my motor as it was sluggish. They arrived within 30 min, and spend 24 min in total, while I was observing. Immediately just changed the two batteries [charged R1300] and without asking me proceed to remove and replace the door nylon rollers [R1890]. Checked if the door is working. On the invoice I was charged for service of the motor [R899] and service of the door [R429, both of these were NOT done. Total with VAT was R5195 for 24 min work! No quote given before they started. Not to make a scene I paid, but my complaint afterwards to the company received NO response. Be warned stay clear of these sharks.