extra poor service and staff

this is the worse mcdonald's i have ever been to 1st time order was wrong so i left it, 2nd time order was wrong so i left...Now the 3rd time my order was wrong and decided to take action went in calm asked for the manager and told her (Manager Pamela) this is the 3rd time in row ive come to mcdonalds and my order is wrong...she had such an attitude with me this is very unfair and something should be done about it...3 times in a row that they have ****** me... i feel i deserve something in return for all the times they have ****** me!!!