speed fault

HI all
can anyone tell me whats happening this is a speed test from btspeedtester using bt voyager 2100 om max since april Test1 comprises of Best Effort Test:
IP profile for your line is - 3500 kbps
DSL connection rate: 448 kbps(UP-STREAM) 4160 kbps(DOWN-STREAM)
Actual IP throughput achieved during the test was - 3230 kbps
test 21-9-06 6-25 am
then put bt home hub on then got a test 2 days later of this

Test1 comprises of Best Effort Test:
IP profile for your line is - 283 kbps
DSL connection rate: 448 kbps(UP-STREAM) 4192 kbps(DOWN-STREAM)
Actual IP throughput achieved during the test was - 221 kbps
waited 4 days as i've seen on this site but still the same
rang bt got through to english guy had me do a lot of speedtest on different sites then said i have a speed issue so got a ref number (great i thought)
did a speed test today and now its this at 11-15am (3-10-06)

Test1 comprises of Best Effort Test:)
IP profile for your line is - 500 kbps
DSL connection rate: 448 kbps(UP-STREAM) 1664 kbps(DOWN-STREAM)
Actual IP throughput achieved during the test was - 462 kbp today
so if someone can help i've 2 questions
1st if i leave it will it go to my best ip profile of 3500kbps or is it going to stay at ip profile 500kbps
2nd can i check the ref number to see if the fault has been done
sorry if it does not make sense
thanks in advance
smoothdude