Hardware fee charged without consent

Good Day, I received my invoice and upon viewing the invoice I noticed a H/W FEES charge of R114. I tried calling the call centre however I wait in line for atleast 15 minutes and when I finally get through no help is actually given. I just get told the complaint will be logged and that I will be called but I am never called back. For the past 2 years I have not received this charge however the past 2 months I see the charge on my account? Please advise how is this charge now reflecting on my account by providing me a copy of my contract. please contact me via email or my mobile number listed. I also attached the reference number from my call made. Thanks