Telkom billing department is useless

What a useless service provider. Telkom started not debiting my account on time, some month it will not debit at all and the following month they debit twice. The other time while waiting for them to debit after they skip a month of not debiting, they suspend my account and gave me the reference to make manual payment 2300. I did so and the next day they debit 5600 from my account. I did all up and down to get them to refund my money and they didn't, they end up saying that is credit so I must not pay until credit finish. So inconvenience.

Same thing happened October, they didn't Debit and they send me statement that they will debit twice in November. On the 15th November they suspend my numbers, I called and asked they said no, they will debit on the 31st while my numbers are blocked. 31st they didn't Debit, I went to the store and they told me to do manual payment in which I did and they unblock my numbers. I'm now getting legal threats from their collection side saying that they are opening a case against me for non payments and when I told them that payment was already done and my number are working again, they say telkom didn't notify them.

What a useless service provider that does not care about people. Is like dealing with preschool kids who doesn't know what they are doing. NEVER WILL I DO BUSINESS WITH TELKOM AGAIN.