Faulty battery

On the 27th of august 2018 my car(Jeep Compass FWY104FS) went on service in John Williams Bloemfontein the agent of DaimlerChrysler. Where I asked them to check my battery as it was giving problems and they called me later to confirm that battery should be replaced. They told me that they are going to order the battery from Chrysler and it will take a day, so I should leave the car and collect it the following day. The next day when I arrive to fetch the car they told that the new battery arrived but it was faulty and I can the take car and bring it back on Thursday the 30th . On Thursday I left the car there for the whole day and I came to fetch the car, again they told me that they received another battery that was faulty again. So since then I am still waiting for the battery.