Letter of complaint Dear Sir/Madam, I am writing to complain about the inefficient mobile phone service that your company has been providing lately. I changed my plan two months ago, in order to benefit from one of your promotions. However, since then, I have had nothing but trouble with using the service. My phone is constantly trying to get the signal, consequently I am obliged to check it at every moment, as I need to be on call due to my job. Furthermore, some of the applications do not work properly now, and the downloads are extremely slow. As a result, I have to be connected to every wifi network available whenever I need to receive relevant information. Taking everything into consideration, I would appreciate it if you took full responsibility on the matter, finding an alternative as soon as possible. In addition, I urgently ask you for a refund of the last two months' bill, as I have not been able to use my phone properly. Otherwise, I will feel forced to send a complaint to the consumers organization, as well as to look for a company which can meet my needs. Should you need further information, do not hesitate to contact me. I am willing to cooperate, as I have been your customer for several years. I am looking forward to hearing from you. Yours sincerely,