Poor service Vodacom the Bridge

8 March I Purchased micrisoft 535 prepaid 11th March Returned phoned with faults bleutooth defective and screen enlarge by itself phone was sent back By the 25th of March we went back to store and was told it was authorised but they do not know what 6 April I went back And Bruce the Manager was very surprised that the matter was not resolved said he will phone me next day with an answer I said the next day to order me a Caterpillar B100 and was told phone will be there the 15 th April Went there the 16 th April to collect my phone NO PHONE was told they are just phoning around to locate a phone for meI Totally lost my temper waiting in store for 20 min for Bruce I told him I had enough I want my money back by end of business Thursday the 16th April Spoke to A lady in There customer care said she will also phone me back nothing I had to phone her and was told no refund but we can take a new phone and she was pretty rude and arrogant I emailed the owner but he did not even bother to come back to me either My question after all this bad service why must I support them with such rudeness and uphauling service