Bad service

Hi Toyota i am having a problem with one of your dealers halfway Toyota omonde I've been having a battery problem now and took my vehicle in for inspection(Toyota quantum) where they found that the battery is faulty.One the vehicle is still under warranty including the artery.Its been 3 days and matter is not sorted it my vehicle has been taken to 3 technicians who have confirmed that there's nothing wrong with the vehicle and found that the battery is faulty.This is a brand new vehicle bought in August 2020 apparently due to the fact that the vehicle is built in south africa and the battery is supp**** by battery center i have been taken from pillar to post by battery center and your dealer about the matter endeoured cost personally that your dealer is refusing to compensate as this is a business vehicle a day lost is money lost today my vehicle was called in again for inspection and had another technician confirming that the "battery" is faulty yet battery center has not attended to the matter instead it is prolonging the matter all i need is my battery replaced may the matter be attended as this is an inconvenience we pay alot of money to have these vehicles and the service we get in return is appualling i await your speedily response to this matter