NO VOUCHER AFTER PURCHASING ELECTRICTY/ NO RESPONSE FROM CLIENT SERVICE

I BOUGHT ELECTRICTY VIA THE ONLINE APP ON THE 20TH OF JANUARY.. I NEVER GOT MY VOUCHER BUT INSTEAD GOT AN ERROR..I SENT EMAILSON THE 20TH TO CLICKS AND STILL NO RESPONSE FROM THEM.

BEAR IN MY THIS IS HAPPENING FOR HE 2ND TIME IN THE SAME MONTH...

I SENT ANOTHER EMAIL TODAY AND NO WORD FROM THEM