still wrong order after correcting

Mango5 phoned me for new contracts with cell c for 2 Microsoft lumia 535,After every thing was a proofed I then phoned Cell C to confirm my order and when they will deliver the order then i found that my order was incorrect.They then told me that the order was as follow 1 Microsoft lumia and 1 AG chrome I then told the them the AG is wrong they must plz correct it .Cell C then told me no prob they will phone me back and correct it.On Thursday 05/02/2015 the afternoon one of cell c sales mangers phoned me and she told me every thing is in order and they have corrected the problem.On Monday I phoned them again to check my order and then find my order was still wrong after about 30 min on the phone again the consultant stopped the order and told me they will phone me to correct the problem again. No respond back until this morning I then phoned again where the consultant told me I must reapply for the second one ,then I did so and they reject it.I phoned again a norther 40 min later the consultant cant help me with the problem en then she told me they must just give me the correct handset and they will phone me. Rely this is bad service as I am still waiting for 5 days now