write a formal letter 130-150 words to the manufacturer.
Include this information:
+ say what the gadget is called,and where and when you bought it.
+say what the problem is.
+tell the company you are returning the gadget.ask them to repair it or send you a new one
Dear sir,
I am one of your company’s customers. I bought the linking part of my watch last week at one of your shops in Ba Dinh street. At first, the gadget was working well with other parts but a couple of days later it went wrong and cannot go off as usual. I am wrting now to tell you that I am returning the gadget and I want you to repair it or send me a new one.
Your customer,
Ann.