Returns Policy sucks

I bought a fuel pump for my Jetta 23 /09/15 . We fitted it and the car still didn't work. I didn't suspect that the new part was faulty . I changed everything but the kitchen sink after that . only to find out that the pump was faulty . I returned it on 10/09/15. I went to the store on 13/09/15 , spoke to Keagan only to find out the pump has to be sent away and was still there and will only be sent away 15/09/15. Now its over a month I don't have transport . Keagan ant get hold of the technical team checking faulty parts. NOW WHAT. I have a trip planned to go to jhb and I don't have a vehicle . When I paid Goldwagan they didn't have to wait for the funds. Why do I have to wait so long for a part that I paid for? How many faulty parts do they have to test that the technical staff are to damn busy. I am highly annoyed as I buy a lot of stuff from them and this happens and you get treated like you the one that's done something wrong. all I want is what I paid for . a working fuel pump.