BAD service regarding billling

I went to New Zealand from 8 November 2023 to 11 March 2024 to visit my kids. I stopped the subscription for the time which would be 4 months. I However had to give 1 month notice, so could only cancel for 3 months. I thus paid them for 1 month for now services. Then, when I arrived back, I had to pay nearly R500 to reconnect as if it was cancelled due to bad payment? I never paid late because it is on a debit order. In the mean time they offered vouchers/Prices for people who wanted to reconnect. So, I get punished with R500 for the fact that I reconnect. This is, to my opinion, an insult to their faithful clients. I slap in the face...