Data disappearing -- Vodacom !!!

In April I had an issue where my data disappeared and vodacom gave me some of the data back. Last night I had about 1.5 gig left on my phone and I went to bed. At 21:52 I received the below messages from Vodacom !! I wasn't even using my phone. So I would like my data back and the money back in my account and please let me know why this has happened ?????

You have less than 248.0MB of Data available on 0823####. Buy a 20GB Data bundle valid for 90 days at R1310 by dialling *124#. Offer valid today until 23:59

You have less than 98.0MB of Data available on 0823####. Buy a 20GB Data bundle valid for 90 days at R1310 by dialling *124#. Offer valid today until 23:59

You have less than 46.0MB of Data available on 0823####. Buy a 20GB Data bundle valid for 90 days at R1310 by dialling *124#. Offer valid today until 23:59

You've used R12.9 out-of-bundle data on 0823####. so far this month. Dial *124# to Buy a 20GB Data bundle valid for 90 days at R1310. Offer valid today until 23:59.

Your data on 0823####. has run out. Out of bundle rates apply. Buy a 20GB Data bundle valid for 90 days at R1310 by dialling *124#. Offer valid today until 23:59

You've used R152.37 out-of-bundle data on 0823####. so far this month. Dial *124# to Buy a 20GB Data bundle valid for 90 days at R1310. Offer valid today until 23:59.

You've used R105.89 out-of-bundle data on 0823####. so far this month. Dial *124# to Buy a 20GB Data bundle valid for 90 days at R1310. Offer valid today until 23:59.

You've used R305.14 out-of-bundle data on 0823####. so far this month. Dial *124# to Buy a 20GB Data bundle valid for 90 days at R1310. Offer valid today until 23:59.

You've used R605.76 out-of-bundle data on 0823####. so far this month. Dial *124# to Buy a 20GB Data bundle valid for 90 days at R1310. Offer valid today until 23:59.

I would like this to be sorted out ASAP. Im not very happy with Vodacom.