Horrible *****ulent company

During the month my brother and I upgraded the speed to be 100mbps so that I ca work from home and paid pro rated amount to have my speed increase during the time at 6pm the speed would be soo horrible and I would reach out without any help now we are wanting to downgrade it it doesn’t help or work they are literally forcing us to pay for a speed that won’t work and that we don’t owe simple because the invoice has been generated and the speed can only be be downgraded for next month which is ******** I don’t owe them for the speed I have not used it and they been giving me a runaround which is insane.