Telkom mobile

So I did a simswap to Telkom mobile some time ago and needless to say it has just been problem after problem. 1. Some people cant phone me as when they phone it says my number does not exist. I have logged faults, phoned their customer serivxe centre and yet the problem still remains. 2. Data. Between 12 and 7 you can use night time data, so I disable my data roaming to ensure I am using only Telkom and then it atill uses my normal data. So I connected with customer care and the lady that was assisting me said I need to be connected to 4g or 3g. So I tried again and I was connected to 4g telkom but still it used my day time data. Now 4 gig lost no one at telkom can assist me and resolve my issues