VRI Resorts Sent notices out 2 weeks late Lake Forest California

VRI sent out notices in mid Decemebr and I got my notices 2 weeks later. You have to have your money in my January 15th in order not to be delinquent. I sent my check out on January 8th since I live in North Carolina and the address was in Atlanta, Ga which is a major USPS hub in the USA thinking it would take 2-3 days. It has been 4-5 days now and nobody has seen my check. I was told to call back on Tuesday since the delinquency date falls on the Martin Luther King holiday. I was told because the holiday fell on the 15th that I would get until the 16th for my check to process. If I had information about this up front I would have sent my check registered mail with tracking. I have no faith in USPS as well as VRI Resorts. They are all crooks.