Tissot are ******* selling faulty watches for thousands and refuse to fix or refund 1 month after purchase

My husband bought me a tissot watch from cannal walk shopping center in Feb 2017. It started losing time after a few short weeks. We took it in and they told ys they had replaced the timepiece and gave it back to us. Then a month later it started loosing time again so we took it back again. They have **** to us continuously,been abusive to my husband went he has popped into the shop to enquirer and to date we've not received the refund we requested nor have they fixed or replaced the watch. I'm told I can choose any other watch in the store but it must be a cheaper watch, then they told me they would import me another one which has yet to arrive, then they tell me they will refund me but weeks later they are still giving us the run around. Then the Marketing manager told us that their records show no time piece change, so it's been lies from the word go. I just want to end my relationship by getting my money back and have nothing more to do with Tissot. I will never ever buy from them ever again. It's been 7mintgs since my purchase and I'm yet to have a watch for my R6500. They have my broken watch and won't give me my money back. Totally unacceptable!