opportunism and poor service

In August I received a R10000 bill for my data. Despite three calls to query and dispute all I got were threats of disconnection. I paid unwillingly. In September I increased my bundle to 2GB and received another 2GB free. On 15 October I receive a message to say that on this day I have depleted my bundle. Interesting as I have not used data since 8 October and would thus have had to have used 4GB in 2 weeks just receiving emails. What a disappointment - I have been a loyal customer for almost 20 years. Time to move on. They overcharge and treat clients with disdain.