How can I verify my OLX.pl account before posting an ad?

How can I verify an OLX account with a phone number before posting an ad? I created several OLX accounts before, verified them with phone numbers, and then deleted those accounts. After creating new OLX accounts, I can no longer verify them with my phone numbers because those numbers were already used to verify the previous accounts. Even though the old accounts were deleted, all of my phone numbers are still linked to those deleted OLX accounts. So how can I verify my OLX account now if all the phone numbers I have are already associated with deleted OLX accounts?