bad service from HYPERLI

bought a voucher accidentally chose Durban branch instead of jhb. purchased as a guest. trying to get refund. but the lady who responds. CHANCEL doesn't understand me or doesn't know jnow what to do. been trying for 4 days she just can't resolve it. asked her to call but she doesn't. there is no number on the web that i can call. its impossible. also i bought a deal and to date i have not received a voucher. she cant assist with that as well. they need trained staff to assiat clients. and a call centre number so we can explain nicely to them