Incorrect information given and bad service

I have been with Call C now for more the 5 years. This is my third time I took out a contract. Recently my salary data changes from the with to the end of the month. I had to change my debit order data. I changed it in store and the consultant informed me it will take 30 says before the date changes. I changed it on June 13th which means by July 13th the New debit order date should've kicked in. Now on the same day I upgraded my phone and took on a new contract. Consultants informs me that I will only be paying on August 6th, since the debit order date change takes 30 days. And that it will be a little bit more since it will be one and a half months premium. I understand that. Leaving the store quite happy because i have a new phone,with a bigger in board memory. To my surprise July 6th my invoice comes and I have to pay immediately that day. Where must I get R500 that day. I phone in immediately and stated that there is Money in my account the consultant says that Just wait until August and see and that there will be a penalty. The more I try to tell him he says I must wait and see what my invoice says in August 6th. July woth I get a sms that says my account will be suspended in the next 24 hours of I do not make a payment. I phone in immediately and the consultant tells me there is nothing he can do because that's the way things are. I asked not why didn't the other consultant tell me that my phone might be suspended. He dont know. I call the manager same stuff gets told to me. I tell them I am not gonna pay a penalty it's not my fault. The manager's excuse because it was in store that don't have record of it. But they are doing nothing trying to assist me when their store consultant was in the wrong. I explain I need my phone for work purposes the manager's days go to the store and make arrangements. Why couldn't she help me to make arrangements. I had to borrow money and pay that money. August 6th I didn't receive an invoice. Emailed them for it and received a reply that a consultant will contacte within 24 hours, I am still waiting. But my debit order still took place without me knowing how much my premium was. August if i I receivedy invoice and to my surprise again I was billed for a failed debit note. When I told them upfront there won't be money. And I still waiting on a consultant to contact me. This ist last contract with Cell C. Can't wait for the last 22 months to fly by. Thought they were the best but their customer services stinks. In store and call centre. I do not recommend these ******* to anyone.