Telkom lies

I went to the Telkom shop in Queenswood Pretoria to get a new cellphone contract. I asked the lady very clearly if I can keep my old number to which she answered yes. I asked if she was sure and again she answered yes. I also asked if I would be able to buy additional data through my banking app to which she said: "No, new phones aren't able to get additional data or air time like that". So I opted for a more expensive contract to ensure I don't run out of data. She **** to me on both questions. When I got home and set up the new cellphone I didn't have my old number anymore, I had a new one. And just to check I bought data on my banking app for the new number and it worked as well, meaning the lady **** to me twice. I have been trying to get my number sorted out and the contract reduced to the plan I initially wanted with no luck. I've been to three Telkom branches in the passed 3 days and Each one **** to me or had some silly excuse like "IT guys don't work on weekends, you must go on a weekday" only for them then to tell me "Sorry we can't fix your number here because of network issues" even though they were busy helping 4 other customers on the same network. Don't go to Telkom if you want customer service, you won't get any.