VW Motus replaced my new wipers with old wipers

Took my vehicle to be repaired Coolant tank replacement . Received it back to find out they replaced my new windscreen wipers with old windscreen wipers . i never asked them to replace my windscreen wipers as they are new . i spoke to the service manager Maq he denied it. i showed him the proof they were new wipers i still had the slip from another agent , he still denied it. I am very disappointed in VW Motus Fourways (Lindsay Saker) i will not ever take my vehicle there . They were not helpful they made me feel i was making up a story. i will tell everyone i meet about this. VW can’t be trusted .