Huawei — 4G Dongle serial E3372 not working properly and complained several time but worst service by Huawei

Address:	110044
Website:	www.huawei.com

I buy dongle a month ago but after 15 days it was stopped working, contacted with huawei service team they said that we understand your problem and you send us mail so n so format, i have been done but poor reply (I mean to say that mail was undelivered) my first question to huawei, why these people are making us fool? And second thing if any product bought newly it mean that product having warranty for at least one year as airtel guy informed me. Now if their email is not working and they are not visit to our place and fix the problem then what kind of service they are providing