He deposited something in return for getting some money, but when he wanted to take it back, they asked for more
Question

                If I go to a pawn shop and give them something of value to recieve money, and then I go back to get that something, if they charge me more to buy it back is that riba??.
Praise be to Allah.
      Firstly: 

    It is permissible for the borrower to give something that he 
    owns and that has monetary value, as collateral, whether the value of that 
    thing is less than the value of the loan, or the same, or greater, as a 
    guarantee or surety for the debt that the borrower is committed to paying 
    and so that the lender will be able to take his due if the borrower delays 
    paying him back. 

    Ibn al-Mundhir (may Allah have mercy on him) said: 

    They [the scholars] are unanimously agreed that giving 
    collateral when at home and when travelling is permissible.  

    End quote, al-Ijmaa‘, 148 

    Secondly: 

    It is not permissible for the lender to ask the borrower for 
    more than what he gave him or to stipulate that as a condition. The scholars 
    are unanimously agreed that every loan that brings a benefit is haraam riba; 
    it is not permissible to enter into such an agreement. 

    See also the answer to question no.
    59867 

    And Allah knows best.