Sudden DRASTIC change in production/volume vs $/credits

Im not sure what happened with my account but I had to change my payment method last week and it seems like i lost w months worth of credits or something because i ran out again by Tuesday evening in the middle of a deployment…SO I purchased more credits and im out AGAIN. Ive barely done the same volume of work i did last month and ive paid nearly double as much AND im out of credits and dont reup again until the 4th? somethings not right and i dont have time to figure it out i had to move development over to a competitor for now. PLS help

If you go to Settings -> Billing and Usage you can see your consumption there

This is mine for example

It looks like you've used quite a few requests with the Large model which is over 10x as expensive as the small model

i did ...it still didnt add up. are you saying you checked to see if i received my credits correctly or nah?

and if that is the case it was suggest that i use the larger model after multiple failures of large messages with image requests in it. Which it continued to do....If this is the case and i am just screwed??? then this "upgrade" was seems to be rolled out poorly intentionally at a COST advantage to v0 and will cost them customers that were VERY happy with the product...sad