Every time I order a Big Mac it's the most horrible burger

Every time I order a Big Mac it's the most horrible burger. It's as if they leave the burger standing in an oven all day. The bun is extremely dry and the burger is sauceless. I gave Mcdonalds Capricorn the benefit of the doubt several times but this is now rediculous. They are not up to the standards of any other Mcdonalds I've been to.