[youssefbasha]

It looks like the domain expired and someone else bought it. intodns.com reports no A-records on vpslices.com and the nameservers are pointing to ns1.hostslayer.com and ns2.hostslayer.com.

On the off chance vpslices.com owns those name servers then it looks like they intentionally killed the A-records, unless they're swapping name servers. Usually you'd have those records setup already before the transfer though...

Hmm, i dont think that they are swapping name servers.
and ofc they will contact their customers to take backup/to inform them about the downtime

we haven't got anything that refer to this 
also the phone number that's given to us does not exist, strange or am i wrong?

Best regards,
TNG Team

Who are u and what is TNG?