Deceptive marketing information

Good day, I called earlier to follow up on the fibre installation at my place, application was approved over 28th April 2021. Your flyer suggests that I should wait for approx. 7 days for a fibre installation appointment, this morning when I called in I was informed that it will take 2 to 6 weeks for the service provider to arrange the appointment.

I have already cancelled by LTE contract based on the information included in your flyer, what should happen now ?