EWallet trasction 59

I am so disguted with service I received from Feb last month September 2019 I had numerous wallet amount sent to my number 2 different people...I never keep tap on the amount sent to me as balance reflects on the machine upon ewallet widrawal...to cut matters short this month October 2019 I sent money via ewallet 3 time and the 1st was sent in 5th which I was able to withdraw the 2nd was sent on 9th and the red was sent on 10th as to my surprise I requested for the pin via *120*277# and my balance was 0.00 rand available I went to inside the to query this and I was advised to call the wallet department. I spoke to the lady they told me that 2nd and 3rd ewallet was reversed back to the sender by system and they can not process it without the account holder unless she contact the bank for them to release the funds which did not make sense to me... well I advised the sender to contact fnb and she got back to me says that the money that she sent on 9th on the 10th of October I have already withdrawn it sometime in September... I called the wallet department again and was told that there was a system erra that happened on 23rd... it seems like I withdrew money that was not available on my ewallet funds seriously and they corrected it with the that was sent to me on 9th and 10th....please can someone tell me what service is this...its pure cyber crime to me