I Purchased Entries In A Giveaway, Only For Them To Be Devalued Throughout The Giveaway. Would I Get Into Any Trouble If I Charged Back The Beginning Entries? If So, Is There Any Recourse I Can Take?

Location: Nevada, USA

Hello, I hope this is the correct place to post this and that my flair is correct. Any help would be appreciated!

So I entered into this giveaway for a roughly $5000 gaming PC. The way it works, is that you would buy various merchandise (either "digital wallpapers" or clothing and apparel) and in turn you would receive those items, along with a certain amount of entries depending on how much you spent.

The issue comes from these "bonus multipliers". The item purchased would be marketed as "for a limited time, this comes with (5000x) bonus entries!" and throughout the giveaway, the multipliers would grow exponentially. During the first days of the giveaway, I probably spent about $300-350 dollars in order to procure these entries. I did buy a few articles of clothing that I intend to keep, but the items were all digital wallpapers. At the end of my initial purchasing, I had received about 1.3 million entries to this giveaway, which I thought was a lot, and would leave me with a good chance of winning this.

Over the course of the next few weeks of this giveaway, I would receive some emails regarding special sales for returning customers that would multiply the entries of each item even further. At the time I didn't think much of it, and bought an additional amount that increased my entries by almost 50% on a single purchase.

But then comes the last week and a half of this contest. I'm getting emails now that are offering more than double the amount of total entries that I purchased, for around $25. As the final days creep up, I keep receiving more and more emails that would essentially quadruple, or quintuple previous offers. It had gotten to the point where my original haul of 300 dollars worth of entries was worth roughly $5-10, which I think is absolutely ridiculous.

My question is, do I have any recourse for this? Can I just charge back all the purchases made on my credit card without any impending problems later on, or file a complaint somewhere? I think this is a pretty scummy tactic to sell giveaway entries.