Pathetic service

The service is pathetic, I lodged an enquiry on the what's app group to find out what this message meant as I only have a fibre line. We were moved over by Nepic to Supersonic and I was never charged for this.

I want to know what this means - ( invoice the voice usage charges ) in the below message sent to me.

Welcome to Supersonic. Your first Supersonic invoice is on its way. Debit orders will go off as normal. If your debit order date was chosen as the first, due to the public Holiday tomorrow and the weekend your debit order will be deducted on 4 May 2020. Please also note that Supersonic will NOT *invoice the voice usage charges* for March 2020 but should you have voice usage from 1 April 2020 those charges will appear on your invoice. Should you have any queries, Your VIP Hot Line number for 30 days is *** (Monday to Friday 08:00 to 17:00) #Supersonic

You guys also do not answer any calls nor take any what's app messages. I will soon be moving my ISP and others too.