Why am I seeing unexpected Pinterest ad charges after disconnecting sales channels?

On 11/14 we connected our store to the Pinterest and Facebook Sales Channels from our Shopify store. At that time we didn’t go to admin account for either Pinterest or Facebook which was a mistake on our part - poor planning. Anyway we looked at our credit card on 11/22 and there are charges for Pinterest Ads. We were traveling at that time with holiday and ultimately didn’t look at it until 11/27 - again our mistake. On 11/27 after some basic research we weren’t comfortable continuing it at the time so ultimately disconnected both the Pinterest and Facebook sales channels in Shopify. The following week on 12/4 we saw additional charges for Pinterest Ads now totaling $465 in all. We had no contact # at Pinterest as many have alluded to so then deleted our Pinterest business account. Clearly stopping the Pinterest connection in Shopify didn’t stop Pinterest from continuing to charge us. On 1/1 we received another bill for $132. For all of these charges we never received any emails with details. We also never initiated any campaigns in Pinterest - it was automatically done when the connection was established.

We have had numerous emails back & forth with Pinterest customer support but have had no resolution yet - we are asking for a partial refund. At this point just to close it out. They can’t locate our account on their system nor details as to the charges.
Question: Is there anywhere on the Shopify side where the Pinterest account or ID would have been recorded?
Thank you for any assistance you can provide.

owner Shopify store

doesnt make any sense, why would you be charged if you never started a campaign?