DID Port Request Question RE: PRI's

I Need Assistance.  We exited from long term PRI Contract back in July to a small company out of NJ.  They had tons of porting issues and outages to the point that we reached out to Verizon and engaged them as backup bidder to exit the contract with them due to breach of contract.  We send the disgruntled company an exit letter and tell them we are leaving Jan 31st - they are a small company and have a melt down and are threatening disconnect on the date we provided - Jan 31st.  


Verizon sends them a Port request for the DID's and they have not responded for days.  I also send them a request for confirmation and they also do not respond.


How do you deal with a vendor that wont respond to a DID Port Request ?   is there anyway Verizon can somehow force the porting since they actually go through them anyway ??


 Any insight you can provide would be greatly appreciated!