consultants ill advise regarding LG3G upgrade

I was due an upgrade on my MTN contract. When the consultant advised that the new LG3G was the top seller in store and no come backs and has the same functionality as all other phones I was impressed and upgraded the phone.When i got home my contacts didnt sync.Having to go back to the store waiting in the que again the guy wasnt there that copies the contacts.Then i also told them that my calandar for hotmail doesnt want to add they said that i'll have to see the LG specialist but he wasnt available again!I went to Canal Walk LG store and the specialist there advised that the phone is suitable for gmail and if i'm not satisfied I should return the product back to the store. Now that the 7days clause has expiered due to the MTN store staff has told me they dont know how to fix it. Now they refuse to take back the phone because according to them there is nothing wrong with the phone. The more I tell them and at this stage I called the manager, that there is something wrong with the phone.The basic things the phone cant do - add another calandar and open email attachments and thats the most important functions I need to work!MTN should educate consultants before they sell product!