Gst not deposited by vendor, how to claim

Dear All, This is query which can be understand only with the example below, kindly have a look and reply. X company have taken a premise on rent from landlord Y, Z is the maintenance company of building who bills Y the landlord for the maintenance charges but X pays the maintenance charge as per rent agreement, now when X checks his GST input he finds Z have not deposited any tax on behalf of X and deposited tax on behalf of Y because the billing are done directly to Y not X. The problem is X do not want to enter in the agreement of maintenance with Z because it demands a six month security deposit which impacts the X's working capital very bad. My question here is if X pays all dues with tax to Z and billing and tax deposit are being done in favor of Y will the X be eligible to claim the input tax in this condition? Or is there any alternative or solution to this issue.