Missing data and ridiculous out of bundle charges

This morning I found that the data on my data contract has almost run out. I tried to purchase more data from the mobile app but received an error message, I tried the website and got the same error message and eventually got through to someone in the call centre whom could help me to manually load an extra data bundle. After the data bundle was loaded I checked the usage on the mobile app and found that I only had 4.65GB left after purchasing a 5GB data bundle 5minutes ago. I that 5min I only restarted my router as I received a limited connection since purchasing the new data bundle.<br> I then did some investigation into my account and found that since July or my August account my bill has been extreme high. My Aug bill had R1770 out of bundle charges which means that I could have bought 30GB at R289 per 5GB which my package cost. During the month of Aug two extra 5GB data bundles had been purchased on my account but luckily there were no out of bundle charges. I also now found that on the October invoice a 5GB once off data bundle was purchased and there is still an out of bundle charge of R700 which relates to another 10GB at R289 per 5GB.