No service history found

I bought a motor vehicle from auto pedigree on the 27th february this year through finance at a cost of R135 000 the mileage was on 88 000km with FSH they told me that they did not have the original service book but would get another book and get it stamped for me as the service history would be on record i took there word six months later engine seized on 4september i had vehicle towed to hyundai as it was just serviced there for the 90 000 km service i spoke to the dealer principle at hyundai and he told me they would put in a mew engine as manufactures warranty would kick in but cannot do so cause could not trace the service records they only picked up 15 000km service.Hyundai gave me a quote of R91 000 to replace engine auto pedigree **** to me about the full service history and now im sitting with a major problem and told me nothing they can do.im a father of twins boy and girl 16months old my daughter needs constant medical attention and needs to be taken for contant checkups i bought the car from auto pedigree thinking they are reputable but am not so sure now they got paid already so not there problem now.im very unhappy and not sure what to do.