STILL NO REPLY!!!

Since then last few months I've been not receiving my invoices for my contracts and I keep on calling to request them and the agents tell me the problem is fixed but isn't. I just spent nearly an hour now with Vodacom and out of 6 invoices I was sent 3 and was put on hold for a while by two consults. Another request I wanted to log with the online store is that I upgraded in May, phoned immediately once I seen the wrong device was sent, Vodacom did nothing so I went to a Vodacom Shop and they said it has to be collected so the agent phoned Vodacom Call Centre for me and cancelled and told me that it would take a few weeks to be collected but I would be notified beforehand. Device finally returned until a number of mess ups from the courier company not letting me know when they were gonna collect. Also I never used the device not sim, but for 2 months I was charged from Vodacom. Can come someone please contact me.