Should I sue OfferUp for discriminating against small business owners?

Today, I requested OfferUp to remove my personal number from my business account (which now belongs officially to my boss) for OfferUp. OfferUp did just that, but when I tried to insert my very same personal phone number to my personal account, it said that the number is associated with too many accounts.
WHAT IS THIS?
WHAT IS THIS?
This is ABSOLUTELY not true, the 6267*****5 was REMOVED from the ONLY account (m**************t1@gmail. com) that had the number assigned to it. It has to be a glitch that it's still "taken." The 6262*****0 was from a deactivated account (m******************c@yahoo. com) and we need that permanently removed instead of deactivated because we cannot remove the number from the account that had NO ads posted on it. I already provided screenshots to prove I am not lying to them, but they never respond unless I make a completely new email. 6267*****5 is my ONLY number, NO Google Voice number will work and none of my friends or relatives or strangers will let me use their numbers. If they are going to treat and discriminate small business owners like this, we will not be using their services anymore. OfferUp STILL requires me to have my phone number verified TO post.
Yes
No
Select gender and age to cast your vote:
Updates
+1 y
Here is a response I got from "Arian Gale" who is blindly following corporate's orders:
Please understand that even if the account is no longer active, you are still unable to use those phone numbers.
Updates
+1 y
Here are more blah blah excuses from "Arian Gale":
"We just want to keep OfferUp as trustworthy as possible, so before buying and selling certain items, we ask people to confirm they have a phone number they can be reached at.

We won’t share your phone number with any buyer or seller. They’ll only know that you’ve successfully completed the process when they see your Confirmed info badge.

Arian Gale
Customer Support"
Should I sue OfferUp for discriminating against small business owners?
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