Bad service

So I went online to book a premium line buss ticket in all honesty I did no double check the dates,booked the buss at about 9:45 an went to bed in the morning checked my conformation mas an noticed I put in the wrong dates I called there help center an was told it was my **** up an there is nothing can b done went to the office an explained that I do not want the money back but an it was my fault an can I not get the date changed I was told again it’s my **** up I missed the buss an I must buy another ticket at full price an pay a booking fee agreed it was my mistake but giving I used the buss service to attend my fathers death some kind of human effect could be passed on esp giving the fact that I perched 2 tickets for the same trip