Disapointed loyal customer

Telkom disconnected my service on 23 May while I was unaware that I owe them R69. It was very strange to me that they did that because I normally pay them at the end of the month or the 15 of the next month. In this case it wasn't even month end yet but I immediately than paid them R100. I though my account is up to date and I will pay my next bill on the 15th, but they disconnected it again on the 4th of June. I paid again and my service was restored. To my surprise I now received an invoice for reconnecting fees for R261.21 x 2 which in total is R520.42! This is unfair! No one said I will be paying this. And I would normally pay my account on the 15th and was never before disconnected. I'm a loyal customer for the past 6 years even though my line keeps falling every time it rains and i keep on paying my full bill. Somebody please sort this unnecessary fees out.