Dear Sir,
Greetings from Grameenphone Ltd.!
Thank you for communicating with us and raising your query to our concern. At first, please accept our sincere apology for this delayed reply and any inconveniences that you might have faced due to this.
In response to your email, this is to inform you that,
Thank you in advance for your understanding and relying on Grameenphone. Please feel free to contact us along with your contact number for further assistance.