No response!

I signed a 6 months contract with the 1st month free as the company was running a special for our complex. Few days after installation I received an invoice for R532 requesting that I make manual payment for the month. I immediately sent an email to enquire about the free month and I've sent 2 more follow up emails however I'm being ignored. My emails are not even acknowledged! The landline number provided also goes unanswered. Such bad aftersales experience from a company that responded within hours before I signed up.with them Can someone please attend to my enquiry about the R532 that has been billed!