Poor service

I'm very disappointed on treatment I got with this firm. My AGN battery died just when it reaches 2 years and it comes on 3 years guarantee but the shop in Midrand refused to attend to the matter. I've been at the shop on multiple occasions without positive response instead I always told the manager'Pumba is not available and promised to be called when he comes back to date. I tried reaching the head office, and I was referred to go back to the shop again. At this point I really don't know what to do anymore as being taken from pillar to post wouldn't work, as it's time which comes on expense for me. I will have to lodge the matter at consumer council for professional intervention. I can't be driving a car that feels like a normal, whilst there's its spec that supposed to be in operational hence this battery faulty that couldn't sustain the start and go function longer, no ways. The store manager is really taking advantage of me