Reliance Communications — invalid balance deduction

Reliance had always cut my balance by activating services I have never heard of.. But the main matter is they never inform when service get over.. They start cutting balance without informing dat service(net plan validity) is over.. they have deducted around 700 to 900 rupees of mine lyk this.. Still dats not the worst.. I use their net plan of 47 rupees which has 3gb net free for 1 month.. But when last time I recharged with 47 rupees again dey sent no msg.. N d scheme was changed, of what I was unaware, scheme changed to 10 day validity.. N they deducted mine 124 rupees of balance saing that scheme has changed.. They never inform anythng and threatens me everytime.. Everytime I let go.. Bt it is big amount of money for me now... Please do somethng against them.. I can't even port out cause of rule o[censored]sing same operator for 3 months.. I don't won't to change my number.. Hoping for positive response..