Struggling with a Return and Receiving of Vacuum

Goodday<br> <br> My mother is now struggling more than a week to get her new vacuum cleaner received after returning the one she bought the first time. She bought the Conti but she realized it was too small so she returned it and in return she wanted to buy a Electrolux. When she went back for it they said they didnt order the Electrolux yet and that she can take the Hoover that is in the store. But now the problem is that they need to reverse transactions and it is taking forever. My mom is not happy because this is the 5th or 6th time that she went already and everytime she spend at least almost an hour and then they tell her but they cant give her the vacuum cleaner yet. This is very upsetting and their service is very bad... Please help in this matter because my mom needs the vacuum cleaner ASAP seeing she is looking after my baby and she needs to clean her house. Hope you can help, thank you :)