POOR SERVICE

I have been with MTN for years I think now is time to change to another network as they are busy chawing my money ,last month they took my money twice they said is for Xtime of which I don't know anything about today I bought a 1G for R29 and I did not get the data when I call them they have said is system error but the last agent that I spoke with she said I used the data when I tell her to check for me on which app did I use the data she hang up.