A lot of these UGLs have “official” resellers for their distribution. Basically it’s a way to separate the manufacturer from additional charges when law enforcement does a control buy. I am willing to bet whomever you purchased from is not an “official” reseller. The other side of the coin from separating the manufacturer from selling is someone else has to handle customer service along with end user satisfaction. In other words the manufacturer gets to blame the seller and the seller gets to blame the manufacturer. Either way someone should step up and make it right.
The 'official" reseller thing is supposed to help keep fakes and knock off products off of the market. In theory it should do that but in practice it is all to easy for someone to put “official” on their site and sell fake, knock off, under dosed or flat out GSO in a bottle. You are supposed to be able to check the manufacturer"s site for a list of resellers but they never seem to have the list available.
The blame game aside be prepared to deal with them claiming the bottle is still good because they just substituted test cypionate for test enanthate or something like that. That actually might be something you should check because a LOT of UGLs substitute one ester for another. If they get a deal on test isocaproate because it has been sitting in a whare house for a year then they will buy it and bottle it however they think they can sell it.
Be prepared to have to email them numerous times. If possible point out that you are a returning customer. Point out you have friends that all like the products thus far but this situation could urge them to explore other options. I would do my best to be as polite yet firm as possible. There is no need to tell them to go fuck themselves until it’s the third or fourth email and even then assume once that happens you will definitely not get a replacement.
All that aside if the seller is relatively established and has a decent volume of sales then it is in their best interest to keep you happy and coming back. You just might have to hold their feet to the fire when they blame the manufacturer.