Almost impossible to assemble

Cannot begin to describe my disappointment with the quality of this cabinet. Not worth the price in the slightest. We received this product 2 weeks behind what was quoted to us for a delivery date. (This was okay since I am aware that transportation is not always in the sellers control) However, when we did receive this product and began the assembly process it was clear that the measurement were off for the recesses where the shelves are supposed to slide in! The shelves were to long preventing us from sliding the back board into the correct position. My husband has been at this for 2 hours to no avail and I believe we will need to sand down the shelves in order to get them to align correctly. The indents should have been deeper or the shelves measured correctly. Either way the design is extremely flawed. I hope somehow we are able to adjust this enough for it to work since we have been without a pantry for over 3 months and returning this only to receive a new one in another month is just not an option.