Selfish service provider

So Vodacom is ediment not to refund me my money...it's been over 3 months of calling them non stop but to no avail and i have lost all hope of getting back my money. All their call centre agents are miss informed with their own procedures and protocols. How can a huge company like Vodacom fail to refund R287.00 with all necessary documents provided to them,this is a total utter disgrace...VODACOM IS SO SELFISH AND *********** WHEN IT COMES TO CUSTOMER SERVICE.I give up