Data and Airtime dissapearing

I am very disappointed in the service I have received from Vodacom, this is the 2nd month my data and airtime has disappeared the day after my account gets recharged. I contacted my local Vodacom shop who logged a call, I did not receive any feedback last month, I again logged a call this month and received a reference number , no further feedback as yet. I have been supporting Vodacom for +- 10 years but I am considering switching to another network.