Rain horrible service

I contacted rain in December or Jan of this year to advise them that my account due date is wrong and the sim cards I got is not picking up network and even the router has dips she called me back and told me to move the router I did that she said she would sms me the aps settings never happened I managed to Google how to do it now I can send smss but not call those Sims also I don't know what the hell she did to my acc cos it never asked for payment on the 15th Jan I then went to pay in last week I paid R270 or something and because my acc should be due today I wanted to pay the balance to my surprise my acc due Date is changed back to the 15th with my balance due being R834 now I don't know what the hell is happening I am sick and tired of this it's on my husband's name but I pay it and I have had enough I want wifi that I pay at the end of the month.when I get paid cos even when I call them no one answers then they try calling me during my working hours I have had enough shame I wonder where I must get a whole extra R500 something now on the 15th when I get paid end of the month