DISSAPOINTED BIRTHDAY

About a 1 month ago, my partner decided to surprise me with a Samsung trend neo for my bthday. The phone was freezing and batery life was not lasting even for couple of hours, we returned the phone within 7 days of purchase, the consultant in the store said we could not not a refund or exchange, they would need to send the phone to a technician. Well its dissapoiNting as we have not got feedback for about a month now, we keep phoninng the store and goin to the store to check up, they keep taking our contact numbers bt no calls NOTHING, I have so dissapointed and angry that I dnt want that phone anymore as I feel is not brand new anymore and feel that we paying every month for sommething that is broken. As for ther service its pathetic. Really dissapointed. Not worth it at all. I would like my account to be credited as I would like to purchase a phone from another store that will offer a better service and know what they are doing.