We made our feeds like that until we started using colief and cow & gate. With the cow & gate formula you have to add the powder to the water within 15 mins of it boiling. I make up about 4 bottles, put them in a pan of cold water. Once they are warm i add 2 drops of colief and put them in the fridge. I then warm them at each feed. Doctor suggested giving feeds warm to help with colic as it is gentler on their stomachs.
I was the same as you a couple of weeks ago. I was in tears and falling out with oh cos i was exhausted. Frankie would just scream in pain cos she couldnt get her wind up. I would definitely recommend swapping to cow and gate comfort. First night on it was awful cos it upset her bottom!! But we stuck it out and she is now feeding every 4 hours - if not more!! I would also recommend a swing if you can afford one. It is brilliant. We have this one but in a different colour.
http://www.toysrus.co.uk/Babies-R-Us/Toys/Baby-Swings/Graco-Baby-Delight-Swing-Lemongrass(0025677)
I hope you manage to crack it soon. Im so glad we changed milk and used colief. Its now like we have a different baby. I know exactly how you feel so if you have any more questions just ask.