Complete ******* and no help for ****** phone!

Not only have I been completely ********** by this company but now when I really need them to come to the party they can't help me! My bill went from paying R488pm over a year &a half to now R2700! When I ask i get told because of the data! I have been using the same amount of data the whole time so this makes no sense! either your data rates have changed which as a customer we should have been told about or u are *****ing from us! I want to see a detailed billing of my data but no one can supply this to me! Then my phone got ****** last week and they can do nothing for me because of the strike! Now because I cannot blacklist my phone some ***** is using it freely! It is ludicrous that no one can help me blacklist and then on top of it not offer me any other solution in the meantime! Instead I must fork out another R140 for a SIM card and try to find another phone until they stop striking! I want out of this contract and refuse to pay this company one more cent! You have no idea how to run a business no wonder your own staff are striking! You are complete *******! And strange how every single other person using MTN is complaining about the same thing - increased bills &no service!