Why do you charge me for services not rendered??!

1st you change my bill cycle without consultation, then you don't allocate my 50GB data on new bill run date (27th), it's allocated a week late (on the 1st), and still I don't have my 10 000 MTN TO MTN minutes, despite sms message confirming allocation. To date, I have 347 MTN TO MTN minutes - this is the same on the 2nd number on my account. What's going on? You're quick to load the promo charges on my new month's invoice, but where's the service you charge me for?? Missing! 808 says many customers have the same complaint, why don't you notify your paying clients when you have these issues so that we don't waste our time calling & re-caling to query?? Ticket ref 1- ********** 6396