Mc Donald bad service

Very disappointed with what happened today @mc Donald Kempton Park central.i have ordered a lime milkshake when I arrive @home it was disaster.1st it was not lime milkshake ,2nd it doesn’t even taste like a milkshake I dnt know what happened but honestly I just wasted my money.i love mc Donald a lot but today they showed me flames...it was a bad bad service Shem ...I really want to upload a picture but don’t know where to attach it