Incompetence and poor service

Last month they deducted on my account but never credited me with the contract benefits of 50 SMSs, 500 minutes and 15GB data. I made atleast 12 calls to their call centre all week, being transferred from one department to another and when you finally get to the right one they just disconnect the call and you repeat that process all over again and again. After those calls I only received a reference number 2 weeks later. That matter was never resolved. Today my benefits are due and the credit me with 50minutes and 500MB and that is not even 10% of our agreement. Spoke with someone that works there and they let me know that the department in there incharge of that has been very poor in service even internally they have issues of incompetence there while the staff is also given enough support to perform. I'm just defeated in calling and calling cause now I know they don't even care