Refusal of return on damaged goods

I purchased a gate battery from the Midas store which had stopped working in 2 days I return the battery and was advised that they will charge my battery and return it the next day. I was advised that my gates was faulty and the battery was new but they will charge it anyway so I called out a technician to my home who checked my gate motor and advised that everything was working and he charged me a call out fee of R200. I return to Midas and was advised that the battery was not charging and 'returned to supplier. So I asked for another battery and was denied another battery as Midas has to wait for the supplier to finish their claim , I was then advised to buy another battery from them which I refused, the management refused to reimburse me or replace the battery I explained I paid for call out for nothing and I can't access my yard I insisted in a new battery the staff and management was absolutely of no help and rude towards the end My point if the battery was not functioning I should have been replaced not asked to purchased another one, they even offered me a loan unit but then said they don't have. I am a regular customer at the store but will never shop their again