How do I fix my integrated fridge?

Having purchased a new kitchen from a company called kitchens I now find that the hinges on my integrated fridges no longer work the fridge door will not close properly. I have tried contacting the kitchen company but to no avail, I am now hoping that you will be able to supply me with new hinges. The fridge should really be replaced as the rubbers are now damaged the fridge is also overheating as well.