Urgent help

So this is gonna be a long one,pls near with me,and if anyone knows the solution,plus.respomd Ok so my merit number is 766,which will probably fall on kmdc merit,however I don't wanna go to kmdc ,pls don't ask me why,it's a long list of reasons,anyways,so on the call list interview day (which is Sunday for me),if the self finance seat for smbbmc run out,then I'll have to put in a pay order of 50k to put my name in the self finace list,now my cousin told me that on that day,they'll offer the bds admission too,for example thry will offer me admission in dikiohs if I want it,so if this situation occurs,and I have to put Ina pay order,then I'll take admission in dikiohs as a back up, Now the problem is,u have to pay the fee ij the next 3 days in order to secure admission, now I'm confused,if I pay the fee for dikiohs ,and I get admission in self finace,will I be able to withdraw my fee from there,or if not,then what am I supposed to do? This is driving me nuts ,pls help if u know the solution