False reflection of Data balance on Vodacom 4G Router

As of today (16 August 2017) Vodacom has fixed the app and it is now reflecting correctly on all of my balances. I have proof of before and after this issue on the app. Please read below:

The Vodacom app on the router always displayed my Data(normal hours - 3GB) and Night owl(after hours - 3GB) balances individually and correct. Somewhere last month Vodacom changed something on their side and the app included the night owl data into my normal data balance column (the night owl balance was still separate in it's own column). I thus thought I still had enough data and continued on using it as I will be losing any data over 3GB at the end of the month. After the normal data column reached 3GB of available data, that value did not decrease... At the start of this month I logged into the online website and found that I have been using 1GB of data out-of-bundle.

I logged a dispute with Vodacom and instead of a bill of R1311.00 they decreased it to R528.00 And also apparently this month (August) I will also get a bill of R324.00 as the 31st of July I used 75MB of out-of-bundle data. (Note: My bill every month is R249.00) I am always a customer that stayed within my data usage.

Why must I pay for your mistake vodacom??