So Airtime just disappears

Dear customer, as per your ref S3-8803W-WCM6P. Please be advised that we have reviewed the data usage on your number ___. After a thorough investigation, it was confirmed that the data in question was indeed used and the billed amounts are true and correct. We do not monitor nor record website and URL information, you can check the history logs on your device for that information. <br> Kind regards, Vodacom Customer Care Abdul Wahaab Patterson. This is Vodacoms reply. Here is what happened.... I recharged my account with R100 on Monday. Tried to purchase bundle NUMEROUS times using the USSD code for 1Gig (R79) NO success. Phoned Call Centre. We have a problem, please try again later. Tried yesterday afternoon. Only R74 left of my R100. Was informed that I used R26 data between 18:45 and 19:00. On WHAT? I was trying to purchase a bundle with USSD and not via the application. Why would I spend R26 on R2/meg if I can buy 1 GIG for R79. Next issue... I have 3 contracts with vodacom. I check my online statements invoices regularly. Recently my master account has been delinked from my other 2 Account numbers. Call centre inform I now have to register each.. REALLY?<br>