Byju's — Need to return byjus ias kit

I purchased byjus ias kit on jan 2021 but now i need to return because i cant able to understand the content only polity is usefull for me other than that nothing helps me. For the 1st 15days they told me to study polity iam ok with polity so i havent claimed for return but now when i used to go for other subjects nothing is so easy for me understand.. I need to return the product