Mtn Is Fucking Customer Up

some weeks ago i called one of my friend 4 just 14sec and mtn cut #150 which is not good,have being trying 2 call customer care since then.dsame thing happen 2 my sister yesterday witout calling anybody.i think they should find solution 2 thier network b4 people started changing 2 other network.am williams 08034874611

wat do u think we can do as a customer b:cos this is geting 2much.lets join hand 2gether n do something