Abuse by House and Home Mayville

in Jan i bought a microwave oven from Mayville branch together with a kettle.i was told by Paul there's no stock and i will be phoned when they receive stock.a week went by and i phoned to make an enquiry very arrogantly Paul wanted to know what i wanted.a long discussion it came to that Paul had issued me the wrong papers to leave the shop and that i am claiming a microwave not paid for although I have the paid receipt.at this stage i was frantic over the phone with Paul who now said i stole the microwave.i insisted on speaking to the manager and was told he was on leave and his stand in was Franci. as I explained to Franci what is the situation she confirmed that at the time of purchase there were 5 microwaves in stock.i felt so abused by these people.on 13 april this microwave breaks, i take it back and ask to speak to the manager, as i do not foresee speaking to those people again.i started explaining what had happened and he was not interested in hearing what i had to say so he was not even aware of the incident where his staff member accused clients of *****ing goods.I phoned twice now to try and find out what is going on, only to be told, Joshua is on lunch.too little space