MTN IS RUNNING A ****

MTN is running A ****...their online deals promise a R400 pick n pay voucher but i never received when they delivered the phone...i was told i will get an sms with a voucher 7days after receiving phone, but it has not being delivered. i call their call center and i was transferred 6 times but no one knows anything about how to redeem my voucher. i have made over 4 calls to NO SOLUTION...this is a clear disregard for ethics and TCF...