Door dash bait and switch me

Okay so I got an order and it was for cvs to scan a couple isles for 8.50$ so I said okay. It was my first time doing that so I went in the workers were very cool and I had to do 11 and 17. About half way through 11 my phone dies. And all I have was a portable wireless charger and if yall know about those they suck. It took forever for my phone to turn back on and even longer to get it to 3 percent so I started and within 2 minutes phone dead again. That happened one more time when a worker said they had a cord I could use. So I put my phone on charger got it up to 30 percent. And I restarted and finished both 11 and 17 and after all that it was almost 2 hours in cvs for door dash to give me 1.40$ I got heated I called and the bottom line was if I had a screen shot showing the amount I should have got they could help me. So now when I get an order I have to screen shot just so that won't scam me. Why would I have to do that? That seems so shady. And they can just see the offer they sent and when I accepted the order. So I ended up getting 1.40$ for 2 hours in cvs, I asked them do you think if the offer was 1.40 I would have gotten it? Then I asked would you have done it and the person hung up on me. I just think that's so unprofessional and super shady. I'm very upset about it and I literally don't want to ever work for them again but it's all I have right now to make some money. But what do yall think? And I overreacting or are they doing me shady?Okay, so I got an order, and it was for cvs to scan a couple of aisles for$8.50, so I said okay. It was my first time doing that, so I went in. The workers were very cool, and I had to do 11 and 17. About halfway through 11, my phone dies. And all I have was a portable wireless charger, and if y’all know about those, they suck. It took forever for my phone to turn back on and even longer to get it to 3 percent, so I started, and within 2 minutes, the phone was dead again. That happened one more time when a worker said they had a cord I could use. So I put my phone on the charger, got it up to 30 percent. And I restarted and finished both 11 and 17, and after all that, it was almost 2 hours in cvs for DoorDash to give me$1.40. I got heated. I called, and the bottom line was if I had a screenshot showing the amount I should have gotten, they could help me. So now when I get an order, I have to screenshot just so that won't scam me. Why would I have to do that? That seems so shady. And they can just see the offer they sent and when I accepted the order. So I ended up getting $1.40 for 2 hours in cvs, I asked them, “Do you think if the offer was $ 1.40, I would have gotten it?” Then I asked, “Would you have done it?” and the person hung up on me. I just think that's so unprofessional and super shady. I'm very upset about it, and I literally don't want to ever work for them again, but it's all I have right now to make some money. But what do y’all think? Am I overreacting, or are they doing me shady?