Data re-imbersment

Ive been having issues with data not being allocated to my account for over a month now whenever I recharge via the app. Ive been calling in and this is becoming frustrating. On Sat I called in about a 2gig bundle i bought which was doubled ref:1- ********** ********** , to date the data hasnt been allocated, called in tues to follow up. I then on sunday bought a 5gig bundle which also wasnt doubled as per the My Voda app. I called on tues got a ref:1- ********** ********** , yesterday I get an sms saying that data bundle was doubled which is total nonsense and I would like them to prove this to me as per their investigations. This nonsense of also always calling in is getting boring and irritating, I spend a lot money for your services which currently im not getting, actually even thinking of cancelling my services with you guys