How do I get my line back to 13.5meg?

Question

Hello,
I would like to get my 14meg speed back, how do I go about this?
Stats:-
ADSL Line Status
Connection Information
Line state:
Connected
Connection time:
13 days, 00:04:45
Downstream:
13.494 Mbps
Upstream:
1.152 Mbps
ADSL Settings
VPI/VCI:
0/38
Type:
PPPoA
Modulation:
G.992.5 Annex A
Latency type:
Fast
Noise margin (Down/Up):
15.3 dB / 6.6 dB
Line attenuation (Down/Up):
24.4 dB / 14.8 dB
Output power (Down/Up):
18.3 dBm / 11.9 dBm
FEC Events (Down/Up):
0 / 0
CRC Events (Down/Up):
0 / 0
Loss of Framing (Local/Remote):
0 / 0
Loss of Signal (Local/Remote):
0 / 0
Loss of Power (Local/Remote):
0 / 0
HEC Events (Down/Up):
3 / 0
Error Seconds (Local/Remote):
4 / 2
Speedtest (speed.io):
BT Speedtest:
<script type="text/javascript"></script> Test1 comprises of three tests
1. Best Effort Test: -provides background information.
Download  Speed
7417 Kbps
0 Kbps
7150 Kbps
Max Achievable Speed
 Download speedachieved during the test was - 7417 Kbps
 For your connection, the acceptable range of speeds is 2000-7150 Kbps.
 Additional Information:
 Your DSL Connection Rate :9721 Kbps(DOWN-STREAM), 1179 Kbps(UP-STREAM)
 IP Profile for your line is - 8000 Kbps
2. Upstream Test: -provides background information.
Upload Speed
919 Kbps
0 Kbps
1179 Kbps
Max Achievable Speed
>Upload speed achieved during the test was - 919 Kbps
 Additional Information:
 Upstream Rate IP profile on your line is - 1179 Kbps
3. Quality Service Test: -provides background information.
Video Service Quality Test Passed
We were unable to identify any performance problem with your service at this time.
It is possible that any problem you are currently, or had previously experienced may have been caused by traffic congestion on the Internet or by the server you were accessing responding slowly.
If you continue to encounter a problem with a specific server, please contact the administrator of that server in the first instance.
Thanks

Answer 1

Hello, 
Reason for the wild downstream variations are unknown...   ADSL Line Status
Connection Information
Line state:
Connected
Connection time:
13 days, 00:24:46
Downstream:
9.494 Mbps
Upstream:
1.152 Mbps
ADSL Settings
VPI/VCI:
0/38
Type:
PPPoA
Modulation:
G.992.5 Annex A
Latency type:
Fast
Noise margin (Down/Up):
15.5 dB / 6.6 dB
Line attenuation (Down/Up):
24.4 dB / 14.8 dB
Output power (Down/Up):
18.3 dBm / 11.9 dBm
FEC Events (Down/Up):
0 / 0
CRC Events (Down/Up):