Not received R300 free airtime

I puchased a Huawei Y221 from PEP on 22 Dec 2015. The deal included R300 free airtime. After a couple of days as i did not receive it, I went back to PEP and they said I must go to Vodacom. I stood in the queue for about 15 mins and was helped by Ishclor van Heerden. He did not know why I had not received it so sent head office an email. I have sent numerous emails to Ishclor. He has rep**** back to some stating its still being sorted! To date, I have still not received the airtime.