Not paying for this month

As per your technician who was at my premises on Monday 20/08/2018 to check up on a fault has insisted that I do not pay for this month as I am not able to receive internet connection due to a fault in the line by the junction box . I am meant to have a 4mbps uncapped line however when I am only able to get speeds of upto 0.05kbps which is only a tenth of dial-up. Therefore I request a credit note for this month and for the next until the problem is solved