Welcome to the PlayStation Community.
Was this playstation reimbursing me for monies taken from my account without my knowledge? Offered no explanation just 3 credits of 50 dollars each(nums and increments seem mighty familiar tho) straight into my acct
Some people reported some eroneous transactions from their SEN (PSN) account for FIFA points, this sounds like Sony picked up on it & reimbursed you.
Did you check or have you noticed any transactions that appeared out of the ordinary?