Airtime and data disappeared

<p>Yesterday I received an sms saying my data is almost depleted. when I dialled *111# at 20:40 It said: Your current subscription balance is R45.01; 0.00 MB data until 01/11/2016; Once-off: 19 SMS's until 28/10/2016 : 512.66MB until 20/10/2016; 0 MMS's; Night shift daily until 05/10/2016. NOW! Big surprise this morning all everything is gone except my 19 SMS's (now 17). I contacted vodacom and they told me I have used my date between 23:00 en again 12:05. I was a sleep and never before had this happening to me. I bought 1GB 3 days ago to last me another 3 weeks as it always does and sometimes it last for 4 weeks. How is it that my R45 airtime and my 512.66 MB disappeared. And want this refunded a.s.a.p. As I understand this is now happening regularly to customers. And How is it that my airtime also disappeared and now Vodacom tells me this internet took my airtime.</p>