Sales!: repeated incorrect RICA details bungles delivery again and again

I was contacted by Vodacom direct sales with a data contract including modem which I was happy to take. All of my details were correct including my ID which I had to verify at the start of the call. When it came to be delivered by RAM couriers, it could not be delivered as while it had my correct name and delivery address - the home address and ID number was incorrect. I then called Vodacom again and they after checking all my details again were going to contact the courier company and ensure that this was corrected and that I would receive the package . A week later after no response I called Vodacom customer care again who said that the modem had been returned by RAM couriers and that I would have to contact sales again and re-order the package. I once again through Vodacom sales, detailing the previous delivery issues, double checking my ID and home address on the system once again. They blamed RAM couriers for the incorrect address and ID no. Today once again, the modem was supposed to be delivered - the waybill still had the same incorrect home and ID number and RAM had to return the parcel again. Over the last 2 weeks I have spent large amounts of time and energy on the phone with both Sales and customer care explaining the issues without success. The incorrect home address and ID no issue has happened twice previously and I had to go back into a Vodacom store to check my RICA details last year, after it happened the first time. In all my communications and billing from Vodacom from the start - my address and ID no have been correct and no one seems to understand where the fault lies. I have wasted so much time calling and waiting for deliveries. I am so frustrated by this, I am thinking of cancelling everything with Vodacom and going with a provider that can at least manage to deliver to you the thing they sell.