Sick and tired of bad service

My husband bought a wedding ring at american Swiss about 2 months before the wedding. The day before the wedding i took out the ring and saw that the colour had come off. I went to American Swiss and showed the lady what happened and she was not friendly then we started to argue over the receipt because i couldn't find it but after a while she said she will look into her records. She phoned me later that day and said she will give me a refund or swap the ring. the day after the wedding me and my husband went to American swiss and went to swap the ring for another ring and we paid in the defferince they had to resize the ring and told us it will take a week. The Saturday of the 31st of October me and my other went to American Swiss she wanted to go look at something so I told the lady that my other will be coming to fetch the ring so the lady said she can come on Tuesday after 4 o'clock, My mother did what she said and when she got their on Tuesday afternoon they refused to give her the ring because they had to do something first and they started an argument with my mother. I am sick and tired of their attitude and not willing to held and their bad attitude.