Правильно написанно(граматика) И укажите где исправить
Hi!I received your letter! I was glad of hearing from you as well!
Thanks for your invitation. But I am compelled to upset you, I can't go with you on concert. The matter is that my parents are going to go to the cinema and I will be compelled to nurse my little brother. On the next week i wiil be free and we can go on another concert. Thanks for understanding! Well will have fine.