Nedbank Internet is useless and need to be fixed

Nedbank internet is a joke. i have made two purchases for electricity in the last two months. on both occasions i have not been sent an sms with the voucher. instead i must call the call centre and be told that i would need to logon to the old banking platform to obtain the voucher. when i opened this account i was advised that the old platform is being phased out so i should just use the new internet banking. when you call the call centre you are told that the voucher takes three to five working days to be obtained and resent. you would think that they would send the voucher but they will not and expect you to call again and check as to why you were not contacted or the whereabouts of the voucher. this is appalling service to say the least. the idea of internet banking is to make online purchases and receive the goods or service immediately