ParkOmator alternatives

I was sent a promo code by spot angels and when I tried to use it during my booking, there was no place tu enter it. I called, emailed, texted and Whatsapp them, without any response! Pathetic. And on top of it I was charged twice by the parking facility and now I have to do all this extra work and waste time out of my busy schedule to get the credit back. Don't use spot angels, if you don't want aggravation. Pathetic company. Very bad customer support. STAY AWAY!!!...