Barnard service

I experienced extremely bad service from Vodacom, I was using Mtn but decided to switch to Vodacom, I tried buying the Samsung galaxy s8 online (november 2017)but no one contacted me regarding my request, after a message popped up saying they will contact me in 24 hours, yesterday morning i phoned them regarding my online inquiry and after 2 hours and a lot of airtime later the workers at customer care were so rude and couldn't help me I decided to go and buy it in store this morning, I recieved my S8 and everything was good , until i noticed that i haven't received my flight center voucher yet I was wondering when I will receive it , I decided yet again to phone the call centre again just to ask what is the estimated time to receive the activation sms... and again the rudeness stunned me!!! One day on Vodacom and already regrets it. Does anyone know how long does it take to receive the activation sms or must I go back in store?