im not a happy customer

I went to truworths pavallion to buy stick foundation at black opal and when i came there i was assisted by the black opal make up artist, and she recommended that i use black walnut and i told her that the colour is too dark for me but she insisted that this is my colour, i then opened the make up the following day and used it but then i visited another black opal outlet and that used another colour on me which was definetly better that the one i was given to me at truworths. I then went to complain at truworths the consultant then called the store manager and he said he cant get involved because its their product so the consultant took my details and said she will enquire with her manager. I received a call on Saturday by the consultant she said she spoke to her manager Pam and she said i wont be assisted as product has been used, and that's it. Im complaing because im no make up artist and it was the first time using the stick, i trusted this consultant. I thought she knew what she was doing, i request a call back and my correct colour because im not using this one. My money is WASTED.