You have to give it some time. Mid day on Sat on a holiday weekend, most folks that actively help on this web site aren't sitting at their computers. I wouldn't be setting here now if it were not for having new knees (newest only 4 weeks old) that seriously needed a break.
Anyway, depending on what they put it on with, it can be a real pain to get it off. If there is excess displaced, begin by cutting it away with a utility knife, then use the same knife to cut between the parts as far as possible. If they bolted it tight, you won't get far, but if they left the recommended gap then this can really help, or at the least provide places for small pry bars to gain purchase. Also depending on parts, location, and adhesive material, you may find heat (even a moderate amount like a heat gun, but generally talking flame heat) can help, again, depending. But in the end, sometimes you just have to drive in something to pry with and work at it a while trying not to do damage to whatever parts are most important...