McDonalds Competition ****?

A few weeks ago McDonalds hosted a NAZO meals special where you could get a scratch and win voucher. I got the meal, scratched and tried to redeem the voucher. There was an error on the screen. I then emailed the rewards office and was asked to provide my voucher code which I did. I have since rep**** to that same mail thread about 4 times with no response from McDonalds. I don't find the fact that I now need to publically address this issue to get results very funny. But it seems to be necessary.