If the college say  you on call that fees for the ballb course is eighty thousand and online it showing something else you should believe what the college said because sometimes websites are not updated and show old fees you can ask the college to send the full fee details on WhatsApp or email so you have proof with you and there is no confusion  you should also keep the call screenshot or message safe so that if anything happens later you can show it before paying any money always check with the college office or their official website only do not trust any random website because only the college will give you the latest and correct information for your admission process and fees