Customer hell with MTN and Rewards Co

i ordered a cellphone contract from MTN Online and i was called by an agent from Rewards Co to process my application and everything was fine. i was then told to expect my device within 3 working days. it has since been two weeks and there is no communication from the service provider. i have to call and hold to get updates and most of the time when i call their system is offline or i get an answering message that says i have caught them outside their operating hours even if it is still within their operating hours. their latest update is that i must expect an agent to call me. this experience was so frustrating and i do not wish it on anyone