Credit Limit Bar: my devices is SOFTLOCKED everyday

I am so not pleased by the service I am receiving from Vodacom, the service I am receiving is completely not equal or at least close to the amount I am paying to VODACOM, their service is very cheap. My line get suspended everyday around 18pm since last week Wednesday, 3 Jan 2018 for no reason known to me because according to my understanding I should NOT be having a credit limit bar on my account as I am on a top up package. Secondly over a week of experiencing that everyday still no success, I have to call Vodacom on ********** every day to ask them to remove the soft lock so that I can transact with my phone. A service request was logged on Friday, 5 Jan 2018(18:12) with reference no. 1- ********** ********** , still not positive feedback no sigh that it has been attend to or at least attempted to be resolved. I have been with Vodacom contracts since 2013, I am so not pleased to the point that if possible I want out, I wish to cancel this contract, surely there’s better service providers in RSA. I DO NOT understand why is this happening to my phone when my account is up to date, and most of the customer service assistants do not know what is happening some assume that I requested a credit limit bar that I myself never heard about as I have always been on top up contract only. I want this to never again happen on my line or I will be forced to cancel the contract and all the services I have with Vodacom. This is totally not acceptable and satisfactory.