no responds to emails by customer service

Good Day To whom it may concern. on the 8th Oct I mad e a international online purchase. It is now 13 Nov 2018, that very package has not arrived. I am mostly concerned with the delay because if I would need to send back the package for exchange, it would be too late because the store time frame has expired. Please assist me in speeding up the process. I have called and sent several emails with no respond to even a single one. All I receive is automated replies. The backlog has been cleared, yet I am still waiting for further delays. Please can someone respond ?