Nasty Vanilla Milkshake Not Mixed Well

In Johnson county ky. We went there an they handed our milkshakes all they did was talk about there personal life’s an then they handed us our milkshake an one had a hole in it then took it back in an the manager tryed just handing me the cup back with another cup over that cup an went to drink the another one it had a big piece of plastic in it an the other one was supost to be vanilla an It did NOT taste nothing like vanilla it was NASTY ..an we bought four of them and none of them were mixed very well I would very much like sum thing done about this. I will never like to go to another Wendy’s again because of this !!!