Cognizant — offer letter cancellation

Address: Dehradun, Uttarakhand

got selected in cognizant in 23rd march also i got my date of joining on 28th april but i met with an accident on 25 april i even requested the HR team to kindly allow me to defer my joining date and provided them with my medical certificate but instead of deferring the date they canceled my offer can you now help me in finding the options that i am left with