시원스쿨 아이엘츠/토플

I am writing to complain about the quality of my Internet connection. When I joined your company, you told me that you would provide me with the fastest and most reliable Internet connection. However, whenever I try to access a web page, my computer slows down and I receive a ‘failed to connect’ message after a few seconds.
Furthermore (In addition, Moreover), I work from home and rely on having the Internet so that I can send emails to my clients and host online seminars. Due to the poor Internet connection provided by your company, I have already missed two deadlines this week. This is causing ,me a great amount of stress.
I would appreciate it ( I would be grateful) if you could send an engineer to repair my connection immediately. If the problem is not resolved by the weekend, I will look for a new Internet provider. Should you require further discussion, please feel free (do not hesitate) to contact me on 555-328-5822.

이게 선생님이 예제로 주신 전체답인데요 순서대로 질문이 몇개 있습니다

-You told me that 대신에 쓸수있는 다른 표현은 없을까요? Formal한 레터에 이 표현을 써도 괜찮을까요
-whenever I try to access a web page에서 access 동의어로 connect를 써도 될까요, I receive a ‘failed to connect’ message after a few seconds.에서 receive대신에 get을 써도되는지 few seconds 앞에 왜 a가 와야하는지 궁금합니다
-I work from home에서 at home 이 될까요
-if you could send an engineer에서 me가 생략된건가요 없어도 되나요
-If the problem is not resolve by the weekend,에서 resolve 대신 solve 동사를 써도 되나요
-I will look for a new Internet provider. 여기서 provider 대신에 company를 써도 되나요

감사합니다