Pearson have lost my exam papers

(For context the level go 3,1 then 3,2 and then 4) I have been told that they cant see that i have sat the exam which i sat last year (3,1). I have already completed level 3.2 and now they cant give me a overall grade because of a exam they lost. They cost me my place at my Uni. what should i do

When you refer to levels "3,1" and "3,2" are you referring to the 1st and 2nd year of a level 3 qualification? What qualification is this? Are we talking about a BTEC Extended Diploma? Or AS exams followed by A2 exams? Or something else?

Are you taking this qualification (or these qualifications) privately or via a school/college? If the latter, have you asked them for help/advice?

Do you have any evidence that you sat the exam last year? Presumably you received a grade or a mark or something from them. Have you provided that evidence to Pearson?

Yep 3.1 and 3.2 is 1st and 2nd year. It is a BTEC qualification. I am taking it via college, they said they will have to speak to their managers, but September is coming up and i now have to go to level 4 which will cost me money and if i fail the resit for the lost exam paper i will get kicked out (i presume) they told Pearson that i have failed the exam, but said to me that they cant find it. They told my uni which i wanted to go to, that i have simply failed a exam and they asked if they (uni) will let me in with a not passed exam because they have had problems with their college and asked for uni's to be less harsh. I am so scared, i dont know if i need to find legal help or go to someone.