Dissatisfied with customer service

On the 23rd of October 2022 I sent them an email explaining that I have a gift card that says it's not loaded yet, they answer asking where did I use it and I give them all the relevant details then I'm told they will get back to me once they are done looking into the matter, since then I have been sending them emails checking if they are done and they keep on answering they are still busy yesterday I sent another one and their response is it was redeemed in 2022 shocker, this morning I asked to be provided with the info of which store was it redeemed, which day and who redeemed my voucher and all I'm getting is "Please note that we appreciate your attitude. But the card was redeemed. We inquired from the supplier in 2022. Should you have any queries, please do not hesitate to get in touch with us." looks like I'm not getting my money back I'm very disappointed.