Buy airtime and data al the time

I have been a mtn customer for don't know how long and I can honestly say the network is becoming ****py. My airtime and data is always finish. I buy airtime and data almost on a daily basis. They always have competitions, but not once have I won something. I wonder how many times I have to buy airtime and data to win something. Data never last. 300MB in a day or two. They give you extra data or airtime but this don't even last. We as prepaid customers always get the raw en of the stick. I am really concerning moving networks. Maybe I will get better airtime and data use from Telkom. It feels like we are paying for MTN ***** case in Africa. <br> BAD NETWORK, ****PY SERVICE!!