Jaquar — broken shower head has not been replaced even after 3 months

My bathroom shower head broke 3 months back, they removed it saying it would be replaced but nothing so far. I've tried calling all the numbers available but still nothing. I sent mails and messages, they say it'll be done but 3 months and so not resolved. All my bathrooms have jaquar fittings. It's only 3 years old and now my next shower head is broken. I don't know what to do.