Pathetic Service..Pathetic response time...

I received a Samsung 2x S6 about 2 months back... the first unit had an issue with the keypad and was promptly replaced with another S6... however now the other S6 is giving me issues and Samsung refuses to come to the party... I have asked for the turn around time for repairs / swap out or for a loan unit... but V.O.C simply says there are NO loan units... funny thing... 3 weeks ago I had a loan unit... my issue is simple.. this unit has a signal problem as well as keypad issue.... I am asking for it to be REPLACED as it has already been in for repairs... and I am not getting sent from pillar to post... I have been waiting for 2 weeks now for written feedback from V.O.C but to no avail....