Pathethic service by tELKOM

Poor service, ineffective to cancel service on request using their website and numerous calls - everytime they have different reasons for not stoppping services. What is not to be understood that if I ask that my service be cancelled, it should be stopped within 30 days to effect last and final payment. Started process February, then had to cancel internet service provider first, which was done, now May and landline and ADSL still not cancelled - Why?