Entice you with vouchers that are not redeemable

I was called by Stacey at LPA Lumen Ventis and was advised that if my husband and I attend a 45 minute presentation at their offices in Georgian Street, Bryanston, we would be guaranteed a midweek voucher which is valid for a year. We received numerous calls prior to attending from Stacey and her manager to confirm our attendance. We attended the presentation on 11 May 2019. After the presentation we received an sms stating "we have pleasure in supplying you with the info that you will require to redeem your voucher, register at www.oneyeargift.co.za Voucher no: ### Ref No; ###. T's & C's apply". Before leaving their offices we requested assistance from the receptionist to redeem the voucher. She advised that the voucher could be redeemed any time after 7 days and that we must follow the steps in the sms. I have tried several times to claim my "holiday". At first i received an error stating that "an error exists". Subsequently I received a message stating "voucher number invalid". I called Stacey on #### . She advised me to claim the voucher after7 days. I advised that 7 days has passed. She transferred me to her manager, who despite me saying hello, several times just didnt speak. I tried calling three times after, only for the phone to ring and go to voicemail. Yet they you over and over for referrals