IHS fee showing zero

While submitting student visa application ihs charge was showing zero but reference number was generated. I paid my fess and submitted application. Consultant told me that they will contact me for fees. Same hapo with my spouse dependent application. Now It has been 1 week since application submitted still no communication from.ukvi

My concern is even if they contact me if I pay ihs on.same day . Do this delay my application process time

If you are coming for less than six months, zero IHS is correct.

If not, speak to the international student adviser at your sponsor university who can look into it for you.

My course length is 1 year