money taken for nothing

I have two cell phone contracts with Mtn, I am so not happy with the way airtime, data and sms are just taken from my phone without any valid explanation. This morning I called the call centre three time and on all occasion I have been asked to hold for more then 15min and no one seemed to know what is happening, after holding for so long the phone would cut am not sure if they hung up because they did not no what to say to me or what? I spoke to thandiwe, lesego and mjaki, it's surprising that I haven't received a response on my query but non of the people I spoke to took it upon themselves to call me after they hung up. The worse part is I loaded 15 sms's on sunday morning and only used one but now they are all gone. I am not happy with Mtn at all and sometimes I wonder why am still with the network, looking at the service I have received. When I load airtime it's all gone in just a few minutes wow. This is just reaping us whilst we still paying for contracts as well at the end of the month I would have paid double. Oh and I almost forgot the fact that the premium has gone up without me receiving any notice or letter, just saw the debit order. I sick of Mtn.