Poor Customer support call centre and online

I received a R50 voucher on email from Mr Price. It indicates on the email that you get R50 off if you spend R350 or more online. for the past two weeks I have been trying to use the voucher and nothing. I called numerous times to the call centre and have been sent from online to accounts department. One lady told me the voucher is expired a day after I received the email and the email clearly states a week after your birthday it will expire. The next time I called I was forwarded from online to accounts and as soon as I got to the accounts department they transferred me to online again. When I chat to someone online they tell me to call the call centre, what is the use having the agents if you want me to call.

In two weeks no one has contacted me to tell me the progress or anything. Clearly these agents do not care about my sale. I Suppose R500 sale is not that important.