Vitacost Advan-C with Quercetin & Citrus Bioflavonoids - 1000 mg - 90 Capsules

The ingredients are the same as the ones from Vitacost Advan - my previous purchase. However, the new product is a different company - Synergist - which I did not order. I ordered the brand Vitacost Advan-C with Citrus Bioflavonnoids 1000 mg - 90 capsules. I will keep the product as it is a hassle to return item. During purchasing process the Vitacost bottle, orange-yellow in color showed. Now I have a different manufacturer. Further, it does not show the expiration date on the bottle. Two other items were in package - items inside package were squashed. No damage to product.Why the switch of manufacturers and why no expiration date?