You need to learn to build a cue of headings in 1 min to speak on any topic. They are quite a few things which you can correlate one after the other to frame as per examiners expectations. In case you want to score well in speaking with a practice of 15 days, please connect at WhatsApp 7 nine 8 2 five one 7 0 six seven

Hello Divya,
One of the best ways to improve your English listening skills is to listen to native English speakers. There are many resources on the web that are helpful. The VOA (Voice of America) has a great website with compelling stories that you read and can also hear. You can also adjust the speed so you can slow it down to listen to the pronunciation. There is also another website like the BBC website. The other thing is to practice your English with other speakers. You have asked an excellent question, and you can achieve this goal. Remember, keep practising conversing in English. 

Please don't ever try to be an amateur IELTS trainer because all IELTS trainers are trained specially to teach & most of them are Abroad educated. So they have practical experience of IELTS exam themselves. Moreover, you are admitting yourself that your Grammar - Tense sense is weak, how can you teach students then? I hope you understand.

There is no case where the IELTS exam results are not declared. It is always declared. Usually, it is processed and declared by the 13th day after the exam. In sporadic cases, it so happens that the candidate's results are delayed, and there is always a good reason for why it happens. 

Usually, when there is a difference of 2.5 in the band between L and R and either W or S, then the results are marked by the second examiner, who does the cross-checking. This often happens with some scripts and recordings. If there is a considerable difference in the band between the first and the second examiner, then it is sent to London, where the third examiner marks it. This also happens within 13 days.