poor finish

My husband and I are currently going through our project and have come to the stage for the plastering. However we have ended up with a bumpy and strange finish. The builders tell us that they are going to fill it but to us it seems a lot of work? Both of us are not plasterers or builders so...

Ive just had most of my property rendered in a white monocouche but I’m a little disappointed with the result (neighbouring properties don’t look like this) however I know nothing about it! Is this a good job? Professional honest opinions please. Thank you in advance.