Attend to this matter Urgently or I want my money back

On the 07/04/18 I bought 60cm Oven, Hob and Hood cash and assisted by Jennifer. On the 23/06/18 Went to complaint about the Oven not working properly. Jennifer took my details and promised it will be resolveD within 3 days. On the 25/08/18 went to check status of my complaint and it was not recorded by Jennifer. Hilda Ramphoolo recorded my complaint and promised 3 days issue to be resolved but I was not. On the 01/09/18 went to ask where the delay is and was to Defy doesn't work and I should phone on the 03/09 as they can't help me. The Hilda woman told me to phone her and I'm finding it hard to understand why should I be the 1 phoning or is it how customers are treated once youve paid then the service is crab when complaining about what the sold. If it's not resolved I'm going to take out all what I bought and return for a refund or use other alternative ways of getting my money. Service is Crab and wouldnt advise any1 I know to buy there.