pathetic service

I reported Cellc, they responded but since then my query hasn't been sorted out. This is unacceptable, their service is pathetic. I have emailed my statement twice. Their apologies mean nothing without the query being sorted out. This isn't fair on myself, the money was deducted from my account, if one has a contract with CellC and an instalment is skipped, immediately it is disconnected. I need for this to be sorted out promptly. Is this. How they treat their clients. Its no use having promotions to attract clients and then their afterservice is pathetic. Their agents clearly need to be trained more extensively as their product knowledge and customer service is limited.