Hellkom *****s

I am actually considering opening a case against Telkom for de*****ing, I have been paying for a contract for the past 10 months but the sim is not working Every time I get told to go to a store where they will assist until today no one helped me. In December I went and I told the lady if it's not fixed I will not pay and I kept my word now they can send me SMS so fast that I owe why not solve my problem that fast. I will be opening that case