Service once taking up a product.

Recently opened up an account and did not receive any new account voucher as promised beautifully in the marketing. The store i collected my card happily assisted me and was advised by the call centre twice to send through my receipts in order to credit the account. she even asked if they could provide her with a code instead and they requested the receipts be emailed . TO DATE , i have been emailing and trying to make contact however receive no response.