WISP Ripoff

i recently signed up with a WISP, due to the fact that i now live in a rural area. the installation guy showed me how fast i would download at with a speakeasy.net test, that day i was getting 875KB/sec transfer rate, and i was happy. That only lasted for a few days after i agreed he install the Motorola wireless radio. now for the last week i have only gotten speeds up to 104KBsec. note: this is also a burstable connection. my main problem is that when downloading torrents i m only getting around 1KBsec down, during late nights i will get sometimes up to 400KBsec. does this sound like throttling, because he told me that he never throttles his connection and that i should never go below a 3 Mb/sec, or a i m have a issue on my end?