False Information/NO Feedback/Terrible Service

I have a Smart Plan 250 with Telkom Mobile and when querying my upgrade I was ensured I would be able to add the Samsung S7 to my upgrade without having to change my package. My upgrade was timed with the release of the Samsung S7. I followed your prompt via sms and via the website to pre-order. I was told I would be contacted but never was. I have tried calling the sale line but the line is NEVER answered! I contacted the company SellDirect who apparently handle the upgrades for Telkom Mobile and they have never contacted me back and they never answer their phone. I have called the Northgate store when I took my contract and they NEVER answer either of their numbers. I went to the store today who told me that I would not be able to keep my exisiting contract, that the info I was given by customer care was wrong and would need to take a different contract at a MUCH higher price with less than half the data I currently have! I have boasted about the service of Telkom Mobile to people in the past convincing friends to change to their network. I am disgusted at the service and false information and the fact that Telkom Mobile now want to ***** me over!