Day ******* from soweto highway battery centre, Johannesbur

I have purchased a batter at the company. They gave me an old small battery and asked me to come tomorrow for a new fitting battery. I paid R1400 and traded my old battery in. I went to the company to check for the new battery, they told me they will bring the battery where I stay. Its been 3 weeks, I have not received my new battery until today. They gave me wrong numbers for contact. I try to call, the numbers they gave me are unavailable. I am in disdain! do not know what to do anymore. I will have to ask for help from the police if they do not delivery my battery in 24hrs.