Our Card Lock provider for fuel told us we were set as Teir 3 in Feb 2017 when we signed up with them. June of 2018 I began as Manager or our company and I found that we were not getting that teir price but being overcharged every gallon as a "government fleet vehicle like a bus or school maintence truck". The fuel company is saying they do not have to audit our account and get us a correct refund back for the over payment because the company should have caught it when the first invoice came out a year and a half ago. though there is no way to know what the cost for your company is going to be because it is a fluctuating rate daily. they have issued us a credit of some random number and when asked for documentation on how they got that they said they were doing it to be nice and they didnt have to provide us anything or go back and audit the account. they just came up with a number that i believe is less than a third of what we are owed. they then without telling us turned off our account and we had trucks on jobs stuck at gas stations because our fuel cards did not work. they said they can do that as well and not tell us. we are now our of commission for the last 3 days because we have to sign up with a new company so our trucks can be fueled and run.