On Sunday November 29 we purchased Order number [protected] for a synthetic oil change with Castrol for $49.99 with a 25% discount The next day you credited my card back and cancelled the order. On November 30 I purchased another Groupon for the oil change for $49.99 using the same credit card and it went through. However I had the 25% discount on the first order of $12, 50 and not the order you approved and iI would like that amount credited back to my account. Ruth Weinfeld