I received an offering from Sweetwater Filtration System a free card gift for 100.oo usd. It supposed I was going to receive 4 monthly cards for $25.00 . I received the first one after 6 months and when I went to exchange it in Valero Gas Station they told me it didn't have any money. I have not received the other 3 and the company doesn't have or give their phone no. so I can call them directly. I thank you for having the time to read my claim. Loida Gonzalez read full review »