Dear Max,
Thank you for your letter. Sorry I haven't written for so long, but I was very busy.
I'm really sorry your fridge doesn't work properly. I understand why your mom is so unhappy with it. It's not easy to buy a new one cause it costs a lot, but you can have it repaired. And do you have any guarantee? If so , you can exchange it for a new one or repair it for free. I hope my advice can help you
Sorry, I have to go now.
Keep in touch!
love,
John