Meegan helped me with my claim since I was missing cashback from Groupon. She was very understanding and so helpful! It was a very large rebate since my purchase was 2K. Groupon could not find the order # and it was rejected by Groupon so Mr. Rebates could not pay out. She tried her best, I did my best to give all the order numbers from Groupon's customer service (I believe it is Groupon that dropped the ball since remeber- they rejected my purchase, so be careful when purchasing through Groupon) and she went to her manager to appeal it for me. After proving my purchase, it went through and I am so relieved it did. I did have to wait over 6 weeks and had to reach out for a followup, but after I reached out, Mr. Rebates were responsive. I have been a member since 2005 and received over 2K in lifetime cashback so I would say they are excellent and their customer service as well - and they usually have higher rebates versus the others. Just make sure to follow instructions and click through them first, you will see the pennies add up! I would definitely recommend!!!