OVERCHARGES FOR 43 MONTHS

I app**** for a 10meg uncapped business line 3 years ago I've been paying for a 10meg line for 3 years only to discover that I only receive 4megs I quaried this several times and no one is able to assist me. They confirmed that my account is for 10 megs and the technicials comfirmed that I only receive 4 megs. *****, *****, *****