WRONG AMOUNT DEBITED / BIS NOT WORKING AGAIN

My husband renewed our contract on both our blackberry phones in March,we were given a package of R69 per month per handset with R100 airtime and free bis over 24 months.Ever since we took the package towards the end of every month the bis stops working.When we call in we are put on hold for hours on end and no one seems to know about the package,we are constantly being transferred as no one can help.On 30 June my bis was not working again and called center and were told to call ***.We were on hold for 2 hours and called the call center again and was asked to call in the next day as no one could assist us.We called in again and spoke to a teamleader who said that the systems are down due to a technical problem and she could not assist.We called in again on 1 June,the consultant could not \understand"why for this month my bis was not working and my husbands was working as we both have the same package.We were not sent any sms to inform us that there would be an increase to R81 per phone and our account was debited the wrong amount.As per the contract we did not agree to this amount.Why offer a package over 24 months if they cant keep to it?UNHAPPY CUSTOMER VERY POOR SERVICE!!!"""