Do you think gym coach is reaping money out of me?

So I started going to this gym nearby me. I initially got a discount of around 15 percentage. So I had struggle to continue but now I am going regularly. But since December. I was approached for diet plan. So I paid for diet plan then whey protein then fat burner (I have belly but I am not fat) then again next month's whey protein and creatine. My subscription ends in Feb last week. However I got approach for a customized workout out plan. It's half of the 6 months gym subscribtion. The Personal training is twice of that. But it's like I have already spent 2 of my gym membership. Honestly it's totally on my diet which I fail to follow and that's why I haven't made any progress. But do you think I should take that customized plan?