Servis One, Inc. Mortgage Complaint

Servis One, Inc. Mortgage department,

Conventional fixed mortgage Loan servicing, payments, escrow account Georgia

My mortgage loan ( Fixed loan ) was transfer to another bank ( - to BSI Financial ), and this month my mortgage payment went up from $1300.00 to $1700.00. When I called BSI, they told me that when they got the loan, it had a negative escrow balance of $1200.00, and when they paid the taxes and insurance my escrow was negative over $4500.00. Now my question is, where is all the escrow money I paid to -? My mortgage payment is going up more than $400.00 just got the transfer of the loan ... this will affect my finances big time. I need help dealing with this ... my escrow money have to be somewhere!! Please help.