Quick to request money in advance but take forever to refund

I booked a cruise for 4 people last year to take place in mid March 2021. This was done via Cruise masters. Monies are always paid way in advance of travel but we dont get our money back on the promised time. All of the cruises were cancelled due to COVID 19. this is understood to maintain safety protocols. The cancellation notice came through early 2021 and as per MSC we would get our monies back by end June. i've been following up with Monica from cruise masters and she advises that MSC is still holding the monies. i cannot get any information from MSC as i booked via a travel agent. i am now given a new date to get my refund. not sure if this date will move again.