Super host support mistake?

[Tami1]

I have 2 guests are  staying 12 nights.  They messaged me, after checking in,  saying their  3 children will be joining her the last 7 nights.  I contacted superhost support to find out how to change the price and they ended up doing it for me.  I have a $5 fee for extra guests after the first 2. I copied and paste superhost support reply here:

"I've tried to initiate for 5 guests, so you will be receiving an additional payout of $174.60, and this is the guest additional payment $218.12."  

I have never had a problem with superhost support and think they're wonderful but this is not correct.  By my math they should be paying an extra $105.  Am I wrong?  Should I contact them again?  I hate to be a bother but I bet the guests are upset, I have't heard from them yet.  

Thanks so much!  Tami 

[Mike-And-Jane0 · Accepted solution]

@Tami1 Unsurprisingly support have just charged for 3 people for 12 nights at 5/night = 180. This is why I suggested you do it yourself with the guest and just charge for an extra 2 people.

Just message the guest, apologise for the mix up and then just send them some money back via the resolution centre.