Vodacom services

I have been using Vodacom for over 15 years and they services have several deteriorated over these years . I have 4 contracts with them and the service that i am receiving is terrible . I normally use the vodacom app and bank vodabucks and recently they have the feature with Keys that we receive . I have been redeeming keys for PnP vouchers. I received an sms stimulating that there has been a technical issue and we will receive new Wicodes . Yesterday i received an sms stating that i have replacement Wicodes for the Value of R300 X 2 . I went to PnP to redeem those codes and it was only to the value of R30 each . I called the customer service department and they had a terrible issue stating that it was a human error so i did tell them that i still have vouchers that are owing to me and the lady said that i must wait and i will receive it . VODACOM HAS BECOME THE WORST NETWORK WITH SO INEXPERIENCED STAFF