Although I do like several skin medica products, their customer service is beyond dismal. I ordered TNS in April, and one chamber never worked. After several (approx 6) contacts with customer service, and after promising to replace the product they never did. So, I purchased another TNS from local dr. Office. Have since run out so again reordered through allle/skin medica. 12 days have passed since I placed the order and was charged for it, but had not received any info about the order. So, called to inquire and was told it was due to weather, which is understandable, but some communication would have been helpful since they already charged me for the purchase. I then requested to speak with someone at skin medica about product usage, and have been on hold so far for 57 minutes... UNACCEPTABLE! For anyone hoping to get help using products, or have questions don't expect any... u are on your own, and for products this expensive that is unacceptable customer service. This will be my last skin medica purchase and I'm hanging up my 57 minute hold call