Vodacom is *****ing our Airtime and Data!

Vodacom is *****ing airtime and data! Just lost R275 in a matter of 30 minutes! Topped up and was depleted without using any of it. Took screen shots every few minutes while the airtime and data was being taken - without usage. Have been having to top up very frequently without the justified usage. When calling Vodacom at first, they told me usage was from having my updates enabled on my smart phone (when it was in fact disabled) and my wifi wasn't working properly (which was in fact working perfectly). Just topped up again this morning for R275 - my airtime mysteriously just dropped from R213 and now to R137 without any usage! Phoned Vodacom again and they \were baffled that my airtime was depleting itself without any usage