Vida xl storage cupboards (Telford and Wrekin TF4)

Only a few weeks old but they need a flat surface to sit on. Will need to be taken apart and we dont have the instructions but assembly will be the reverse of disassembly. Bought from b and q within last month. One has 3 full width shelves and the other 3 half with with full height storage on other side. Each is 68cm wide 40cm deep and 168cm high