transfer or new H1-b visa?

I had worked for company A with H1 B status and company A had decided to downside their facility in CA. I had to look for different employer because I wanted to remain in CA. I had found company B after few months of search and had applied for H1 transfer. I am currently working for company B with a pending status. I had been asked from USCIS after filing for H1-b transfer to prove last employment and provide proofs for last three months pay records which I don't have in hand. I still have good relationship with former employer A. My H1-b from company A hasn't been removed eventhough I haven't worked for them for last few months. Is there any way to answer USCIS requirement.
Can I apply for new H-b visa instead? Can I apply for transfer and new H1-b in the same time? do I have to leave the country for that? I have til march to answer USCIS, if it doesn't work out, is H1-B quota reached for master's for this year?, Do I have to wait long time when apply for new H1-B? Thank you for your help and advice.