Cannot Cancel A service

So We did the Cancellation form and sent it to [Email Removed] and got a Reply.<br> <br> Dear Customer<br> We hereby acknowledge receipt of your cancellation request. One of our agents will contact you within 48 to 72 business hours.<br> <br> That was sent to me on 13 October, 72 hours has passed my dear telkom.<br> I always have to write here because your call center is unable to help, Really really disappointed.<br> Empty Promises of call back, You never call. I cannot spend 30 Minutes each day on the Telephone With you trying to cancel a service<br> <br> Please cancel the ISP Package 2MB home uncapped.