so looking to make a wager on a baseball game that goes off at 715 this evening eastern time....at 702 i click and then a message comes up saying the line has changed... (juice went up) i canceled bet...i wait 60 seconds to log back in.....line is as before when i originally wanted to make a bet (no increased juice) i click on it again a nd it tells me the line has changed again.....so i cancel yet again......now......to see if this was true on the other side ..i waited another 60 seconds logged back in ..line never changed as the first time i viewed it ..took the dog......no changes....what gives a sportsbook ( one that is rated B or more) the right to do this if any?