Redeem my woolworths voucher

<p>I bought a Huawei P9 last month at vodacom heidelberg, i received the voucher. ...redeem it thn came back the reply that it's been used already, went back to vodacom and reported the problem, aftr few days i received an sms from Huawei saying thy wil col me within 14 working days, but i hvnt heard anything from them since, it's January already bt nothing. </p>