Please help with ILR based on 10 year- weird situation

[saurya_s]

Hi all,
I applied for ILR based on 10 years through a solicitor for the same day service. The home office did not see one of my visa and the legal rep of the solicitor was told that I didn't have valid visa for a small period.The solicitor phoned me and I drew his attention to the appropriate visa on my passport and the page number. The solicitor faxed the letter to home office and the home office did acknowledge my application was valid but they need to do more enquiries (possibly standard reply). I have withdrawn my application as I need to be on business trip. Now my questions are:

1. Should I apply through premium service again? I am sure Home office must have written in their record that what enquiries they need to make and that I withdrew the application. I really feel solicitor was useless except for getting me an appointment and the case worker was negligent in his job if he can not see obvious visa on the passport.

2. Should I cite this in my subsequent application?

3. If I apply through post, when do they grant the ILR- the day the process the application or the day I applied? I gathered it takes them 3-4 months for them to process the application if applied through post.

4. Once the application is not successful on the same day, how long does it take to be processed?

Thanks guys.
Much obliged