extremely Poor customer service

I called cell C on Friday morning, 1st March 2019 and was told by the consultant that she will call me back the same day as my free minutes on my contract was not correct as the consultant informed me on the 15/02/2019 that I will receive 300 free minutes.... surprise I ONLY got 100minutes and the consultant and her team leader are yet to return the call. It's Monday afternoon , 4th March 2019 and to think Cell c gets their payment every month without fail, but Customer Service is POOR. I hope someone returns my call as this is unacceptable.

I asked the consultant if it will take 48 hours and she said no.

Very disappointed customer SIHAAM ********** 894