Returning items at Vodacom Tokai

Visited Vodacom Tokai on June 30th and purchased a tempered screen guard for my s9 plus. Waiting over an hour for it to be placed on & leaving with air bubbles on the screen. The consultant that had assisted me said I could bring it back if the bubbles do not disappear. Paid for the item on that day and brought it back 3 days later (June 2nd 2018) as previously advised. Had to fill a form and they started it would be refunded by June 5th 2018, called on June 6th 2018 and the consultant stated it should be in the end of the day. Today is June 11th 2018, no refund, no item either. Their service is pathetic and I am disgusted, as I am in contact with the manager Ebrahim who provides empty promises that the funds would be placed into my account. I will never buy products from vodacom ever, funds can be taken at point of sale and funds are not provided when returning items.