Moving number from GoMo account with multiple phone numbers

[Potato2]

I am trying to switch my phone number from GoMo where I have multiple phone numbers on the account. When trying to switch to Sky, I get email saying 

It looks like you have multiple mobile numbers associated with your existing account, so you'll need to select the multi-line option when requesting to switch to Sky.

Even though I select the correct option when submitting request. Got same email after trying to move number via Sky WhatsApp support and same email with their phone support. Do I have any other options? Phone support seems extremely undertrained as well.  

[Saint1]

Would seem like you have GoMo had actually set your account up as Single-line for some reason and Sky compounding it by not knowing what to do, would suggest trying to put your accounts through as single lines - while illogical it will prob work

[Potato2]

Unfortunately that didn't work either. They even stopped sending updates via email. I'll just freeze my payment card and stay with GoMo. 

[Saint1]

Sorry to hear,  if your Port is failing it would mean GoMo are rejecting for some reason 

Seems the best way to get help from the Sky local team in my exp was DM'ing them on twitter - likely can sort it for you today or at least confirm you wouldn't be charged etc.

Failing that would stick to GoMo