Bad service from Vodacom and not getting any results

I lodge a call on the 19th of March regarding my account. I did an upgrade on the first of March on one of my numbers. i received my statement on the 3rd of March for February and I was billed for the device already which i did not have in February. the lady I spoke to then said she send it through and it will be credited to my account. I spoke to Tshepo yesterday and he said it is because my statement date is the 3rd and i received the device on the 1st. I think it is very unfair to be billed for a device for my February statement which I only received in March. Tshepo handled the situation not very well and I told him Vodacom is *****ing my money. they can not bill me for February for something I only received in March. He kept on telling me it is because my statement date is the 3rd of March. On the 19th of March I also logged a call for one of my data numbers that was 20gig day and 20gig night owl. I never received any of the night owl data at all. they can't find my call logged anywhere on the system. On the 1ste Of March I went to upgrade at Vodacom 4 u at Woodlands (pretroai) Ivan assisted me with the upgrade. He said that we will recive 10gig for free with the upgrade. we did not recieve it and I send him an email on the 2nd of March quering it. He said we will receive it on the 1ste of April. 1st of April still nothing. After numerous phone calls I eventually got hold of Ivan and he told me that that contract doens not get the free 10gig data. I told him that I have it on email send from him that states I will receive it. He said we will not get it with a very arrogant attitude. I lodge a call with headoffice beginning of April and they told me the store must assist me. that is when I tried to get hold of Ivan. Then last week Wednesday I lodged a call again with headoffice which said they will get back to me within 7 days, but alos still no response and still no 10 gig.