Utterly disgusted with the service

First of all I want to warn everyone about telkom and their ridiculous customer service, be it be on hello peter, email nor phone call, no query ever gets resolved. Here's my story: I had a debit order bounce back in December and my monthly subscription is R215 but when my invoices came through I automatically owed double which is now "interest" .IT bounced on the 31st and payment waa made on the 3rd of January so it really doesn't make sense how that interest was calculated. I let that one slide ofcourse and again end of January my account bounced again and on the 15th February I was thripple debited and they took an amount of R600 and something rands and when I call trying to understand that,I'm told I still owe for December but then how come because the statement "your statement" by the way shows I paid and the answer I got is well our system shows you didn't and then I asked for the interest to get explained to me and I get nothing but bull**** in my face. I requested for the manager and I put on the line to hold for the longest time ever just to be told the manager is busy and will get back to me, it's been a week already am I'm still waiting for that mysterious call....I'm utterly disgusted with telkom