Vodacom and *****!!!

I have 2 vodacom contracts 1 for data and 1 for a phone. I have call limits on both the lines and buy data now and again to stay in bundle. I have a R50 limit on my phone and yesterday I got an sms saying I have exceeded 70% of my limit by 13:06.My phone was off as I was out doors and didnt have a charger when I got home by 16h00 I got an SMS that I exceeded my limit and the line will be soft locked I logon to the vodacom website to increase my limit and to my surprise I get a message that my account is in areas I didnt pay for my contract meanwhile I have never skipped a payment I called the *** to enquire and I was told it is a system error but my account is up to date I called 111 I was told i went over my cellphone limit by R950 how is that possible with my phone off and on top of that with a call limit of R50-00. I send 2 emails connected to my wifi router and bang!!! you have exceeded your call limit and the line will be soft locked I had 800MB of data left on this line when I left for work, the router is password protected and only i can access the device. all my apps are not on auto update I update them manually so what happened to my data?