Product: Mortgage

I had my mortgage sold to XXXX XXXX last year and I have had nothing but problems and increased payments, troubles. Last year they purchased my loan at which time I was to get my over escrow amount paid to me ( it was a new build so my taxes were estimated at a flat {$5000.00} while we waited to get the assessors report ). When they took over the loan they did an escrow amount, then said that I owed another {$280.00} in escrow each month as they did n't know what my taxes should be. After 4 months of going back and forth and them withholding my money ( and incorrectly raising my PMI which is a set amount for the life of the loan by the way ), they finally cut me checks in two installments. It became very obvious they wanted to hold on to this money as long as they possible could for FCF purposes. WORST CUSTOMER SERVICE OF ALL TIME-When it was done I was willing to pay the cost to refi to not have to deal with them again but they made a great point that they could end up buying my mortgage right back from them ... Great system we have. 
Fast forward to today and I suddenly got an increase in my escrow payments of {$150.00} due to what they called an " out of cycle escrow review ''. They sent the escrow review and had paid my taxes within 3 months of each other so it showed a big shortage of course. Then the month immediately following their payments for my taxes ( almost back to back knowing they would cause a shortage ) they happen to run a escrow analysis?? I called and my escrow payments of {$390.00} x 12= {$4700.00}. My mortgage insurance is $ XXXXx12 {$770.00}, taxes {$3000.00}, and insurance is {$920.00} which totals : {$4700.00}. So if paid correctly I should have a shortage of {$.00} ... Why am I having to pay an extra {$150.00} each month? So they can accrue money from me to give back in a years time and use it as FCF. This would add up quickly with thousands of customers.. They said it 's federal law for me to have {$720.00} in my escrow at all times? I have two other properties with escrows and never have had this come up before. I have never had so many escrow reviews in 18 years of paying mortgages.. I can only think they are spending the time to do these at specific times to get us to overpay our escrow, take our money for FCF investments and then pay it back in 10-12 months. 
So I proceeded to ask for my PMI payoff amount. They refuse to give me an individual to work with but rather have me call into the XXXX number each time and essentially start from scratch. They proceed to tell me my LTV is 81.8 % right now but say they can not give me an actual number I need to hit. I do n't understand why this is? They tell me to write and mail a letter in and they I would be responsible for the appraisal in case my value went down. That upsets me further as they are over {$400.00}, but I understand they need to make sure the property value is not declining for the LTV. 
To my question : They proceed to tell me that my property must be to 75 % LTV if it 's less than 5 years, and then after 5 years it goes to 80 % LTV. This is no where on my PMI Disclosure statement from the first company. How can this change? I read through and through on the CFPB PMI rules and see this no where. Is this accurate, or is this company once again trying to get me to pay {$64.00} a month for no reason? 
How can this industry be so bad at working under the same rules. How can I be so furious with a company to want to pay thousands of $ 's to not use them only to have the chance I will end up back as one of their customers. Someone help me please.