Used vouchers no accountability on Tmarc

My happiness was short lived after finding out I have won a competition with Tmarc which they were running for Nido 3 Nestle. After struggling to get a sms confirming that I have won 10 000 in voucher that I can use Edcon stores, finally after getting from tmarc send by promise Khumalo who is one of the people in charge of the competitions. Promise called me to ask me if I was having any problem in redeeming the code? I told her I had not tried the code as me and my girlfriend planning to use the code for our unborn baby later on in the year, so since the was a concern as she highlighted to me we decided to go and test it at mal of Africa Edgards it late for us to call to inform her we are having a problem so the very same night I send an email to inform promise that we are having a problem, the following day she called to check on me and I told her that the is a problem and she asked me where do I want to use the voucher and I told her at Mall of Africa. On Friday 09.12.2014 we went to mall of Africa again to try the voucher only to find it was still having the same problem and I call Tmarc on ********** around 14:00 well within office hours only for the call not to be answered as I tried more than 10 times. So when I got home I send Promise a email as soon as I got home to tell her the was still a problem. On Monday I got a call from a lady from edcon by the name of Jabulile and asked me if I was having problems with my voucher of which I told yes, then she asked for the voucher number cause I took too long to find on my phone she told me its fine she has it as it was send to her and informed me it was fine and the was an available balance of R10k, my hope was restored again and the same day around 16:00 my girlfriend and I who is 6 months pregnant went to festival mall to go and by some things for our un born baby at edcon when we got there to make the purchase the teller told me the voucher is declined and said we must go to customer service in the store and ask to speak to a manager and we did, the manager in the store checked the voucher and said she sees the R10k but balance says zero and then the consultant called the voucher department of Edgars and when consultant was still on the phone with consultant at edcon call center called us and asked us if we had not been at Some edgards in Johanesburg that morning and she asked us 3 to 4 times and we told her no!!! Then while in the shop I asked the manager to send Promise an email to ask her to call me, and she did call me and that’s when I told her the voucher was used as per consultant. You can imagine the disappointment in my girlfriends eyes once again. This morning Promised called me to ask me if I have done a sim swap before on this number and I told her yes I did but it was even before this competition, then after a called Vodacom to ask when did the sim swap and they told me the sim card was register in July and that I have never done a sim swap so made a mistake that sim with another phone. Then Jabu called me shortly after promised and asked me if I received a gift card as she was told by promise that they send me a gift card and I told her it was a sms and she asked me to send it to her. Now Tmarc is telling me my sim card has been clowned and I must contact Vodacom. Which I find unacceptable!!!!Can some please help me!!!!!!