10mbps on 8mbps

<p>I have a issue with my adsl line that i have recently upgraded from a 2 to a 10mbps but all i get is 8mbps and your technical department agent says no its fine like that.but logic tells me that if at the time i was on 2mbps i was getting between 1.2 to 1.9 mbps why cant i now get between 9.2 to 9.9?</p> <p> </p> <p>Distance from the exchange is not a factor because tey check during the time i was upgrading.</p> <p> </p> <p>The SNR is between 5.9 and 6.1,doesnt that call for a concern?because i can see that there is an issue on the line and i have reported a fault on several occasions but i just keep getting sms's saying the failt has been cleared but there is no improvements on my line.Please assist in this regard i thank you</p>