I finally cancelled my order for my dog's heartworm medication after 6 phone calls from this site. I sent two separate prescriptions in, they called my vet, yet every week, they had a "discrepancy". It was disastrous to say the least. Horrible customer service and even after I told them what they could do to keep my business, the opted to refund my money. NEVER, NEVER use this site to order your precious pet's medications.