Germany Visiting Friends Visa Remonstrance Denied

I am indian married woman working in big textile company as Confirmed employment. I applied for Germany visa for 90 days to visit friends but was rejected stating reason that purpose not reliable then I again reapply with changed cover letter but again rejected with reason of inadequate insurance and reason9 means leaving schengen area is ascertained then I file remonstrance , they call me for interview and asking me for my husband assurence letter for caring my children for 90 days which I submitted immediately and after one month I got letter answering my remonstrance stating they contact my employer but no response so, they doubt about employment addition to that, they finger on transaction and stating my funds came from Germany but actually my husband transfer that, funds to my account and for his ref. he named it Germany but embassy people thought this came from Germany, third point they told 90 Days visa when you have two dependent children are unbelievable, So my point is They contact my registered office which is closed so they can not contact my employer but fact is I submitted my ID card having my office address and Phone number then why not they contact to my office? why they refer my registered office number which printed on My employment leave letter? How they do not know that in bank statement never show country name? When I submitted husband assurance letter then why they raise point of 90days and my children?If so then why asked me for assurance letter? BTW, I submitted Formal obligation letter, light ticket,insurance , My company salary slips appointment letter, bank statement and car registration paper and children birth certificate. Looking for advice