Disappointed in a usually great service

The item I ordered was a Blackberry sauce boat from Marks and Spencer.which was delivered promptly and very well packed. Unfortunately it was a fruit bowl and was the wrong pattern.I returned it immediately and was assured that the error would be corrected straight away. Two days later the replacement arrived..It was a sauce boat but not the right pattern. I can accept that errors are occasionally made but twice running suggests lack of care or perhaps training of staff in the right department The lady I dealt with was very apologetic and went to the stock room to sort it out personally .The correct item has now arrived. I do hope that you will be able to find some large blackberriy dinner plates for me and that no more errors like this will occur