You could try sticking it under a big piles of flat heavy things and see if that helps [only works if its not too bad ] – may take a while though

yeah what i do with mine if there like that is stick them under the biggest pile of books i can fit ontop of them … but if there too fucked it wouldn’t work .. imho id send it back if its too bad … also if you put them under big hevey shit and put it neer a radiator it might work better .. but be very carefull if you havent got a compleatly flat serface or not enuff waight it will make them worce so as i said you best bet will probably bee to send it back

just to elaberate on the radiator comment .. if you leave a record by the radiator it will warp .. but under pressure it cant .. so when the plastic gets hot and melts slightly instead of makeing its own shape it will just go flat … you would need to leave it to cool b4 you take the pressure of .. mby 24 hr .. but tbh its risky .. you could fuck you tune up compleatly .. so as i said … just send it back.. they should pay for any postage and packageing you have had to forck out for ect. as there in the wrong..