Terrible support

Even though I selected a debit order as method of payment, after the first month nothing happened. After my inquiry, I discovered that there had been a form that I was supposed to fill out for the payment to go off as a debit order, which no one had told me about. Very upset, I then filled in the form and sent it in. Simultaneously, I paid the outstanding amount on my account. The next month, nothing has happened still and I paid the amount in manually on the 1st of October, along with sending emails for them to contact me.I was never contacted and on the 8th of October, I received a mail stating that I need to pay the amount that I had already paid on the 1st. I then sent them another mail asking them to contact me.<br> <br> On Saturday 10 October, I received a mail that someone tried to contact me, but I was unavailable. I went through my phone record and saw that no call was received by my phone. Therefore, I can only assume that they have been lying to give the impression that work was done. I even forwarded a screen shot of my call register to show that no call had been made. Today, they threaten to shut down my internet if I don't pay the amount that I paid on the 1st.